industryterm:electricity consumption

  • Beyond the Hype of Lab-Grown Diamonds
    https://earther.gizmodo.com/beyond-the-hype-of-lab-grown-diamonds-1834890351

    Billions of years ago when the world was still young, treasure began forming deep underground. As the edges of Earth’s tectonic plates plunged down into the upper mantle, bits of carbon, some likely hailing from long-dead life forms were melted and compressed into rigid lattices. Over millions of years, those lattices grew into the most durable, dazzling gems the planet had ever cooked up. And every so often, for reasons scientists still don’t fully understand, an eruption would send a stash of these stones rocketing to the surface inside a bubbly magma known as kimberlite.

    There, the diamonds would remain, nestled in the kimberlite volcanoes that delivered them from their fiery home, until humans evolved, learned of their existence, and began to dig them up.

    The epic origin of Earth’s diamonds has helped fuel a powerful marketing mythology around them: that they are objects of otherworldly strength and beauty; fitting symbols of eternal love. But while “diamonds are forever” may be the catchiest advertising slogan ever to bear some geologic truth, the supply of these stones in the Earth’s crust, in places we can readily reach them, is far from everlasting. And the scars we’ve inflicted on the land and ourselves in order to mine diamonds has cast a shadow that still lingers over the industry.

    Some diamond seekers, however, say we don’t need to scour the Earth any longer, because science now offers an alternative: diamonds grown in labs. These gems aren’t simulants or synthetic substitutes; they are optically, chemically, and physically identical to their Earth-mined counterparts. They’re also cheaper, and in theory, limitless. The arrival of lab-grown diamonds has rocked the jewelry world to its core and prompted fierce pushback from diamond miners. Claims abound on both sides.

    Growers often say that their diamonds are sustainable and ethical; miners and their industry allies counter that only gems plucked from the Earth can be considered “real” or “precious.” Some of these assertions are subjective, others are supported only by sparse, self-reported, or industry-backed data. But that’s not stopping everyone from making them.

    This is a fight over image, and when it comes to diamonds, image is everything.
    A variety of cut, polished Ada Diamonds created in a lab, including smaller melee stones and large center stones. 22.94 carats total. (2.60 ct. pear, 2.01 ct. asscher, 2.23 ct. cushion, 3.01 ct. radiant, 1.74 ct. princess, 2.11 ct. emerald, 3.11 ct. heart, 3.00 ct. oval, 3.13 ct. round.)
    Image: Sam Cannon (Earther)
    Same, but different

    The dream of lab-grown diamond dates back over a century. In 1911, science fiction author H.G. Wells described what would essentially become one of the key methods for making diamond—recreating the conditions inside Earth’s mantle on its surface—in his short story The Diamond Maker. As the Gemological Institute of America (GIA) notes, there were a handful of dubious attempts to create diamonds in labs in the late 19th and early 20th century, but the first commercial diamond production wouldn’t emerge until the mid-1950s, when scientists with General Electric worked out a method for creating small, brown stones. Others, including De Beers, soon developed their own methods for synthesizing the gems, and use of the lab-created diamond in industrial applications, from cutting tools to high power electronics, took off.

    According to the GIA’s James Shigley, the first experimental production of gem-quality diamond occurred in 1970. Yet by the early 2000s, gem-quality stones were still small, and often tinted yellow with impurities. It was only in the last five or so years that methods for growing diamonds advanced to the point that producers began churning out large, colorless stones consistently. That’s when the jewelry sector began to take a real interest.

    Today, that sector is taking off. The International Grown Diamond Association (IGDA), a trade group formed in 2016 by a dozen lab diamond growers and sellers, now has about 50 members, according to IGDA secretary general Dick Garard. When the IGDA first formed, lab-grown diamonds were estimated to represent about 1 percent of a $14 billion rough diamond market. This year, industry analyst Paul Zimnisky estimates they account for 2-3 percent of the market.

    He expects that share will only continue to grow as factories in China that already produce millions of carats a year for industrial purposes start to see an opportunity in jewelry.
    “I have a real problem with people claiming one is ethical and another is not.”

    “This year some [factories] will come up from 100,000 gem-quality diamonds to one to two million,” Zimnisky said. “They already have the infrastructure and equipment in place” and are in the process of upgrading it. (About 150 million carats of diamonds were mined last year, according to a global analysis of the industry conducted by Bain & Company.)

    Production ramp-up aside, 2018 saw some other major developments across the industry. In the summer, the Federal Trade Commission (FTC) reversed decades of guidance when it expanded the definition of a diamond to include those created in labs and dropped ‘synthetic’ as a recommended descriptor for lab-grown stones. The decision came on the heels of the world’s top diamond producer, De Beers, announcing the launch of its own lab-grown diamond line, Lightbox, after having once vowed never to sell man-made stones as jewelry.

    “I would say shock,” Lightbox Chief Marketing Officer Sally Morrison told Earther when asked how the jewelry world responded to the company’s launch.

    While the majority of lab-grown diamonds on the market today are what’s known as melee (less than 0.18 carats), the tech for producing the biggest, most dazzling diamonds continues to improve. In 2016, lab-grown diamond company MiaDonna announced its partners had grown a 6.28 carat gem-quality diamond, claimed to be the largest created in the U.S. to that point. In 2017, a lab in Augsburg University, Germany that grows diamonds for industrial and scientific research applications produced what is thought to be the largest lab-grown diamond ever—a 155 carat behemoth that stretches nearly 4 inches across. Not gem quality, perhaps, but still impressive.

    “If you compare it with the Queen’s diamond, hers is four times heavier, it’s clearer” physicist Matthias Schreck, who leads the group that grew that beast of a jewel, told me. “But in area, our diamond is bigger. We were very proud of this.”

    Diamonds can be created in one of two ways: Similar to how they form inside the Earth, or similar to how scientists speculate they might form in outer space.

    The older, Earth-inspired method is known as “high temperature high pressure” (HPHT), and that’s exactly what it sounds like. A carbon source, like graphite, is placed in a giant, mechanical press where, in the presence of a catalyst, it’s subjected to temperatures of around 1,600 degrees Celsius and pressures of 5-6 Gigapascals in order to form diamond. (If you’re curious what that sort of pressure feels like, the GIA describes it as similar to the force exerted if you tried to balance a commercial jet on your fingertip.)

    The newer method, called chemical vapor deposition (CVD), is more akin to how diamonds might form in interstellar gas clouds (for which we have indirect, spectroscopic evidence, according to Shigley). A hydrocarbon gas, like methane, is pumped into a low-pressure reactor vessel alongside hydrogen. While maintaining near-vacuum conditions, the gases are heated very hot—typically 3,000 to 4,000 degrees Celsius, according to Lightbox CEO Steve Coe—causing carbon atoms to break free of their molecular bonds. Under the right conditions, those liberated bits of carbon will settle out onto a substrate—typically a flat, square plate of a synthetic diamond produced with the HPHT method—forming layer upon layer of diamond.

    “It’s like snow falling on a table on your back porch,” Jason Payne, the founder and CEO of lab-grown diamond jewelry company Ada Diamonds, told me.

    Scientists have been forging gem-quality diamonds with HPHT for longer, but today, CVD has become the method of choice for those selling larger bridal stones. That’s in part because it’s easier to control impurities and make diamonds with very high clarity, according to Coe. Still, each method has its advantages—Payne said that HPHT is faster and the diamonds typically have better color (which is to say, less of it)—and some companies, like Ada, purchase stones grown in both ways.

    However they’re made, lab-grown diamonds have the same exceptional hardness, stiffness, and thermal conductivity as their Earth-mined counterparts. Cut, they can dazzle with the same brilliance and fire—a technical term to describe how well the diamond scatters light like a prism. The GIA even grades them according to the same 4Cs—cut, clarity, color, and carat—that gemologists use to assess diamonds formed in the Earth, although it uses a slightly different terminology to report the color and clarity grades for lab-grown stones.

    They’re so similar, in fact, that lab-grown diamond entering the larger diamond supply without any disclosures has become a major concern across the jewelry industry, particularly when it comes to melee stones from Asia. It’s something major retailers are now investing thousands of dollars in sophisticated detection equipment to suss out by searching for minute differences in, say, their crystal shape or for impurities like nitrogen (much less common in lab-grown diamond, according to Shigley).

    Those differences may be a lifeline for retailers hoping to weed out lab-grown diamonds, but for companies focused on them, they can become another selling point. The lack of nitrogen in diamonds produced with the CVD method, for instance, gives them an exceptional chemical purity that allows them to be classified as type IIa; a rare and coveted breed that accounts for just 2 percent of those found in nature. Meanwhile, the ability to control everything about the growth process allows companies like Lightbox to adjust the formula and produce incredibly rare blue and pink diamonds as part of their standard product line. (In fact, these colored gemstones have made up over half of the company’s sales since launch, according to Coe.)

    And while lab-grown diamonds boast the same sparkle as their Earthly counterparts, they do so at a significant discount. Zimnisky said that today, your typical one carat, medium quality diamond grown in a lab will sell for about $3,600, compared with $6,100 for its Earth-mined counterpart—a discount of about 40 percent. Two years ago, that discount was only 18 percent. And while the price drop has “slightly tapered off” as Zimnisky put it, he expects it will fall further thanks in part to the aforementioned ramp up in Chinese production, as well as technological improvements. (The market is also shifting in response to Lightbox, which De Beers is using to position lab-grown diamonds as mass produced items for fashion jewelry, and which is selling its stones, ungraded, at the controversial low price of $800 per carat—a discount of nearly 90 percent.)

    Zimnisky said that if the price falls too fast, it could devalue lab-grown diamonds in the eyes of consumers. But for now, at least, paying less seems to be a selling point. A 2018 consumer research survey by MVI Marketing found that most of those polled would choose a larger lab-grown diamond over a smaller mined diamond of the same price.

    “The thing [consumers] seem most compelled by is the ability to trade up in size and quality at the same price,” Garard of IGDA said.

    Still, for buyers and sellers alike, price is only part of the story. Many in the lab-grown diamond world market their product as an ethical or eco-friendly alternative to mined diamonds.

    But those sales pitches aren’t without controversy.
    A variety of lab-grown diamond products arrayed on a desk at Ada Diamonds showroom in Manhattan. The stone in the upper left gets its blue color from boron. Diamonds tinted yellow (top center) usually get their color from small amounts of nitrogen.
    Photo: Sam Cannon (Earther)
    Dazzling promises

    As Anna-Mieke Anderson tells it, she didn’t enter the diamond world to become a corporate tycoon. She did it to try and fix a mistake.

    In 1999, Anderson purchased herself a diamond. Some years later, in 2005, her father asked her where it came from. Nonplussed, she told him it came from the jewelry store. But that wasn’t what he was asking: He wanted to know where it really came from.

    “I actually had no idea,” Anderson told Earther. “That led me to do a mountain of research.”

    That research eventually led Anderson to conclude that she had likely bought a diamond mined under horrific conditions. She couldn’t be sure, because the certificate of purchase included no place of origin. But around the time of her purchase, civil wars funded by diamond mining were raging across Angola, Sierra Leone, the Democratic Republic of Congo and Liberia, fueling “widespread devastation” as Global Witness put it in 2006. At the height of the diamond wars in the late ‘90s, the watchdog group estimates that as many as 15 percent of diamonds entering the market were conflict diamonds. Even those that weren’t actively fueling a war were often being mined in dirty, hazardous conditions; sometimes by children.

    “I couldn’t believe I’d bought into this,” Anderson said.

    To try and set things right, Anderson began sponsoring a boy living in a Liberian community impacted by the blood diamond trade. The experience was so eye-opening, she says, that she eventually felt compelled to sponsor more children. Selling conflict-free jewelry seemed like a fitting way to raise money to do so, but after a great deal more research, Anderson decided she couldn’t in good faith consider any diamond pulled from the Earth to be truly conflict-free in either the humanitarian or environmental sense. While diamond miners were, by the early 2000s, getting their gems certified “conflict free” according to the UN-backed Kimberley Process, the certification scheme’s definition of a conflict diamond—one sold by rebel groups to finance armed conflicts against governments—felt far too narrow.

    “That [conflict definition] eliminates anything to do with the environment, or eliminates a child mining it, or someone who was a slave, or beaten, or raped,” Anderson said.

    And so she started looking into science, and in 2007, launching MiaDonna as one of the world’s first lab-grown diamond jewelry companies. The business has been activism-oriented from the get-go, with at least five percent of its annual earnings—and more than 20 percent for the last three years—going into The Greener Diamond, Anderson’s charity foundation which has funded a wide range of projects, from training former child soldiers in Sierra Leone to grow food to sponsoring kids orphaned by the West African Ebola outbreak.

    MiaDonna isn’t the only company that positions itself as an ethical alternative to the traditional diamond industry. Brilliant Earth, which sells what it says are carefully-sourced mined and lab-created diamonds, also donates a small portion of its profits to supporting mining communities. Other lab-grown diamond companies market themselves as “ethical,” “conflict-free,” or “world positive.” Payne of Ada Diamonds sees, in lab-grown diamonds, not just shiny baubles, but a potential to improve medicine, clean up pollution, and advance society in countless other ways—and he thinks the growing interest in lab-grown diamond jewelry will help propel us toward that future.

    Others, however, say black-and-white characterizations when it comes to social impact of mined diamonds versus lab-grown stones are unfair. “I have a real problem with people claiming one is ethical and another is not,” Estelle Levin-Nally, founder and CEO of Levin Sources, which advocates for better governance in the mining sector, told Earther. “I think it’s always about your politics. And ethics are subjective.”

    Saleem Ali, an environmental researcher at the University of Delaware who serves on the board of the Diamonds and Development Initiative, agrees. He says the mining industry has, on the whole, worked hard to turn itself around since the height of the diamond wars and that governance is “much better today” than it used to be. Human rights watchdog Global Witness also says that “significant progress” has been made to curb the conflict diamond trade, although as Alice Harle, Senior Campaigner with Global Witness told Earther via email, diamonds do still fuel conflict, particularly in the Central African Republic and Zimbabwe.

    Most industry observers seems to agree that the Kimberley Process is outdated and inadequate, and that more work is needed to stamp out other abuses, including child labor and forced labor, in the artisanal and small-scale diamond mining sector. Today, large-scale mining operations don’t tend to see these kinds of problems, according to Julianne Kippenberg, associate director for children’s rights at Human Rights Watch, but she notes that there may be other community impacts surrounding land rights and forced resettlement.

    The flip side, Ali and Levin-Nally say, is that well-regulated mining operations can be an important source of economic development and livelihood. Ali cites Botswana and Russia as prime examples of places where large-scale mining operations have become “major contributors to the economy.” Dmitry Amelkin, head of strategic projects and analytics for Russian diamond mining giant Alrosa, echoed that sentiment in an email to Earther, noting that diamonds transformed Botswana “from one of the poorest [countries] in the world to a middle-income country” with revenues from mining representing almost a third of its GDP.

    In May, a report commissioned by the Diamond Producers Association (DPA), a trade organization representing the world’s largest diamond mining companies, estimated that worldwide, its members generate nearly $4 billion in direct revenue for employees and contractors, along with another $6.8 billion in benefits via “local procurement of goods and services.” DPA CEO Jean-Marc Lieberherr said this was a story diamond miners need to do a better job telling.

    “The industry has undergone such changes since the Blood Diamond movie,” he said, referring to the blockbuster 2006 film starring Leonardo DiCaprio that drew global attention to the problem of conflict diamonds. “And yet people’s’ perceptions haven’t evolved. I think the main reason is we have not had a voice, we haven’t communicated.”

    But conflict and human rights abuses aren’t the only issues that have plagued the diamond industry. There’s also the lasting environmental impact of the mining itself. In the case of large-scale commercial mines, this typically entails using heavy machinery and explosives to bore deep into those kimberlite tubes in search of precious stones.

    Some, like Maya Koplyova, a geologist at the University of British Columbia who studies diamonds and the rocks they’re found in, see this as far better than many other forms of mining. “The environmental footprint is the fThere’s also the question of just how representative the report’s energy consumption estimates for lab-grown diamonds are. While he wouldn’t offer a specific number, Coe said that De Beers’ Group diamond manufacturer Element Six—arguably the most advanced laboratory-grown diamond company in the world—has “substantially lower” per carat energy requirements than the headline figures found inside the new report. When asked why this was not included, Rick Lord, ESG analyst at Trucost, the S&P global group that conducted the analysis, said it chose to focus on energy estimates in the public record, but that after private consultation with Element Six it did not believe their data would “materially alter” the emissions estimates in the study.

    Finally, it’s important to consider the source of the carbon emissions. While the new report states that about 40 percent of the emissions associated with mining a diamond come from fossil fuel-powered vehicles and equipment, emissions associated with growing a diamond come mainly from electric power. Today, about 68 percent of lab-grown diamonds hail from China, Singapore, and India combined according to Zimnisky, where the power is drawn from largely fossil fuel-powered grids. But there is, at least, an opportunity to switch to renewables and drive that carbon footprint way down.
    “The reality is both mining and manufacturing consume energy and probably the best thing we could do is focus on reducing energy consumption.”

    And some companies do seem to be trying to do that. Anderson of MiaDonna says the company only sources its diamonds from facilities in the U.S., and that it’s increasingly trying to work with producers that use renewable energy. Lab-grown diamond company Diamond Foundry grows its stones inside plasma reactors running “as hot as the outer layer of the sun,” per its website, and while it wouldn’t offer any specific numbers, that presumably uses more energy than your typical operation running at lower temperatures. However, company spokesperson Ye-Hui Goldenson said its Washington State ‘megacarat factory’ was cited near a well-maintained hydropower source so that the diamonds could be produced with renewable energy. The company offsets other fossil fuel-driven parts of its operation by purchasing carbon credits.

    Lightbox’s diamonds currently come from Element Six’s UK-based facilities. The company is, however, building a $94-million facility near Portland, Oregon, that’s expected to come online by 2020. Coe said he estimates about 45 percent of its power will come from renewable sources.

    “The reality is both mining and manufacturing consume energy and probably the best thing we could do is focus on reducing energy consumption,” Coe said. “That’s something we’re focused on in Lightbox.”

    In spite of that, Lightbox is somewhat notable among lab-grown diamond jewelry brands in that, in the words of Morrison, it is “not claiming this to be an eco-friendly product.”

    “While it is true that we don’t dig holes in the ground, the energy consumption is not insignificant,” Morrison told Earther. “And I think we felt very uncomfortable promoting on that.”
    Various diamonds created in a lab, as seen at the Ada Diamonds showroom in Manhattan.
    Photo: Sam Cannon (Earther)
    The real real

    The fight over how lab-grown diamonds can and should market themselves is still heating up.

    On March 26, the FTC sent letters to eight lab-grown and diamond simulant companies warning them against making unsubstantiated assertions about the environmental benefits of their products—its first real enforcement action after updating its jewelry guides last year. The letters, first obtained by JCK news director Rob Bates under a Freedom of Information Act request, also warned companies that their advertising could falsely imply the products are mined diamonds, illustrating that, even though the agency now says a lab-grown diamond is a diamond, the specific origin remains critically important. A letter to Diamond Foundry, for instance, notes that the company has at times advertised its stones as “above-ground real” without the qualification of “laboratory-made.” It’s easy to see how a consumer might miss the implication.

    But in a sense, that’s what all of this is: A fight over what’s real.
    “It’s a nuanced reality that we’re in. They are a type of diamond.”

    Another letter, sent to FTC attorney Reenah Kim by the nonprofit trade organization Jewelers Vigilance Committee on April 2, makes it clear that many in the industry still believe that’s a term that should be reserved exclusively for gems formed inside the Earth. The letter, obtained by Earther under FOIA, urges the agency to continue restricting the use of the terms “real,” “genuine,” “natural,” “precious,” and “semi-precious” to Earth-mined diamonds and gemstones. Even the use of such terms in conjunction with “laboratory grown,” the letter argues, “will create even more confusion in an already confused and evolving marketplace.”

    JVC President Tiffany Stevens told Earther that the letter was a response to a footnote in an explanatory document about the FTC’s recent jewelry guide changes, which suggested the agency was considering removing a clause about real, precious, natural and genuine only being acceptable modifiers for gems mined from the Earth.

    “We felt that given the current commercial environment, that we didn’t think it was a good time to take that next step,” Stevens told Earther. As Stevens put it, the changes the FTC recently made, including expanding the definition of diamond and tweaking the descriptors companies can use to label laboratory-grown diamonds as such, have already been “wildly misinterpreted” by some lab-grown diamond sellers that are no longer making the “necessary disclosures.”

    Asked whether the JVC thinks lab-grown diamonds are, in fact, real diamonds, Stevens demurred.

    “It’s a nuanced reality that we’re in,” she said. “They are a type of diamond.”

    Change is afoot in the diamond world. Mined diamond production may have already peaked, according to the 2018 Bain & Company report. Lab diamonds are here to stay, although where they’re going isn’t entirely clear. Zimnisky expects that in a few years—as Lightbox’s new facility comes online and mass production of lab diamonds continues to ramp up overseas—the price industry-wide will fall to about 80 percent less than a mined diamond. At that point, he wonders whether lab-grown diamonds will start to lose their sparkle.

    Payne isn’t too worried about a price slide, which he says is happening across the diamond industry and which he expects will be “linear, not exponential” on the lab-grown side. He points out that lab-grown diamond market is still limited by supply, and that the largest lab-grown gems remain quite rare. Payne and Zimnisky both see the lab-grown diamond market bifurcating into cheaper, mass-produced gems and premium-quality stones sold by those that can maintain a strong brand. A sense that they’re selling something authentic and, well, real.

    “So much has to do with consumer psychology,” Zimnisky said.

    Some will only ever see diamonds as authentic if they formed inside the Earth. They’re drawn, as Kathryn Money, vice president of strategy and merchandising at Brilliant Earth put it, to “the history and romanticism” of diamonds; to a feeling that’s sparked by holding a piece of our ancient world. To an essence more than a function.

    Others, like Anderson, see lab-grown diamonds as the natural (to use a loaded word) evolution of diamond. “We’re actually running out of [mined] diamonds,” she said. “There is an end in sight.” Payne agreed, describing what he sees as a “looming death spiral” for diamond mining.

    Mined diamonds will never go away. We’ve been digging them up since antiquity, and they never seem to lose their sparkle. But most major mines are being exhausted. And with technology making it easier to grow diamonds just as they are getting more difficult to extract from the Earth, the lab-grown diamond industry’s grandstanding about its future doesn’t feel entirely unreasonable.

    There’s a reason why, as Payne said, “the mining industry as a whole is still quite scared of this product.” ootprint of digging the hole in the ground and crushing [the rock],” Koplyova said, noting that there’s no need to add strong acids or heavy metals like arsenic (used in gold mining) to liberate the gems.

    Still, those holes can be enormous. The Mir Mine, a now-abandoned open pit mine in Eastern Siberia, is so large—reportedly stretching 3,900 feet across and 1,700 feet deep—that the Russian government has declared it a no-fly zone owing to the pit’s ability to create dangerous air currents. It’s visible from space.

    While companies will often rehabilitate other land to offset the impact of mines, kimberlite mining itself typically leaves “a permanent dent in the earth’s surface,” as a 2014 report by market research company Frost & Sullivan put it.

    “It’s a huge impact as far as I’m concerned,” said Kevin Krajick, senior editor for science news at Columbia University’s Earth Institute who wrote a book on the discovery of diamonds in far northern Canada. Krajick noted that in remote mines, like those of the far north, it’s not just the physical hole to consider, but all the development required to reach a previously-untouched area, including roads and airstrips, roaring jets and diesel-powered trucks.

    Diamonds grown in factories clearly have a smaller physical footprint. According to the Frost & Sullivan report, they also use less water and create less waste. It’s for these reasons that Ali thinks diamond mining “will never be able to compete” with lab-grown diamonds from an environmental perspective.

    “The mining industry should not even by trying to do that,” he said.

    Of course, this is capitalism, so try to compete is exactly what the DPA is now doing. That same recent report that touted the mining industry’s economic benefits also asserts that mined diamonds have a carbon footprint three times lower than that of lab-grown diamonds, on average. The numbers behind that conclusion, however, don’t tell the full story.

    Growing diamonds does take considerable energy. The exact amount can vary greatly, however, depending on the specific nature of the growth process. These are details manufacturers are typically loathe to disclose, but Payne of Ada Diamonds says he estimates the most efficient players in the game today use about 250 kilowatt hour (kWh) of electricity per cut, polished carat of diamond; roughly what a U.S. household consumes in 9 days. Other estimates run higher. Citing unnamed sources, industry publication JCK Online reported that a modern HPHT run can use up to 700 kWh per carat, while CVD production can clock in north of 1,000 kWh per carat.

    Pulling these and several other public-record estimates, along with information on where in the world today’s lab diamonds are being grown and the energy mix powering the producer nations’ electric grids, the DPA-commissioned study estimated that your typical lab-grown diamond results in some 511 kg of carbon emissions per cut, polished carat. Using information provided by mining companies on fuel and electricity consumption, along with other greenhouse gas sources on the mine site, it found that the average mined carat was responsible for just 160 kg of carbon emissions.

    One limitation here is that the carbon footprint estimate for mining focused only on diamond production, not the years of work entailed in developing a mine. As Ali noted, developing a mine can take a lot of energy, particularly for those sited in remote locales where equipment needs to be hauled long distances by trucks or aircraft.

    There’s also the question of just how representative the report’s energy consumption estimates for lab-grown diamonds are. While he wouldn’t offer a specific number, Coe said that De Beers’ Group diamond manufacturer Element Six—arguably the most advanced laboratory-grown diamond company in the world—has “substantially lower” per carat energy requirements than the headline figures found inside the new report. When asked why this was not included, Rick Lord, ESG analyst at Trucost, the S&P global group that conducted the analysis, said it chose to focus on energy estimates in the public record, but that after private consultation with Element Six it did not believe their data would “materially alter” the emissions estimates in the study.

    Finally, it’s important to consider the source of the carbon emissions. While the new report states that about 40 percent of the emissions associated with mining a diamond come from fossil fuel-powered vehicles and equipment, emissions associated with growing a diamond come mainly from electric power. Today, about 68 percent of lab-grown diamonds hail from China, Singapore, and India combined according to Zimnisky, where the power is drawn from largely fossil fuel-powered grids. But there is, at least, an opportunity to switch to renewables and drive that carbon footprint way down.
    “The reality is both mining and manufacturing consume energy and probably the best thing we could do is focus on reducing energy consumption.”

    And some companies do seem to be trying to do that. Anderson of MiaDonna says the company only sources its diamonds from facilities in the U.S., and that it’s increasingly trying to work with producers that use renewable energy. Lab-grown diamond company Diamond Foundry grows its stones inside plasma reactors running “as hot as the outer layer of the sun,” per its website, and while it wouldn’t offer any specific numbers, that presumably uses more energy than your typical operation running at lower temperatures. However, company spokesperson Ye-Hui Goldenson said its Washington State ‘megacarat factory’ was cited near a well-maintained hydropower source so that the diamonds could be produced with renewable energy. The company offsets other fossil fuel-driven parts of its operation by purchasing carbon credits.

    Lightbox’s diamonds currently come from Element Six’s UK-based facilities. The company is, however, building a $94-million facility near Portland, Oregon, that’s expected to come online by 2020. Coe said he estimates about 45 percent of its power will come from renewable sources.

    “The reality is both mining and manufacturing consume energy and probably the best thing we could do is focus on reducing energy consumption,” Coe said. “That’s something we’re focused on in Lightbox.”

    In spite of that, Lightbox is somewhat notable among lab-grown diamond jewelry brands in that, in the words of Morrison, it is “not claiming this to be an eco-friendly product.”

    “While it is true that we don’t dig holes in the ground, the energy consumption is not insignificant,” Morrison told Earther. “And I think we felt very uncomfortable promoting on that.”
    Various diamonds created in a lab, as seen at the Ada Diamonds showroom in Manhattan.
    Photo: Sam Cannon (Earther)
    The real real

    The fight over how lab-grown diamonds can and should market themselves is still heating up.

    On March 26, the FTC sent letters to eight lab-grown and diamond simulant companies warning them against making unsubstantiated assertions about the environmental benefits of their products—its first real enforcement action after updating its jewelry guides last year. The letters, first obtained by JCK news director Rob Bates under a Freedom of Information Act request, also warned companies that their advertising could falsely imply the products are mined diamonds, illustrating that, even though the agency now says a lab-grown diamond is a diamond, the specific origin remains critically important. A letter to Diamond Foundry, for instance, notes that the company has at times advertised its stones as “above-ground real” without the qualification of “laboratory-made.” It’s easy to see how a consumer might miss the implication.

    But in a sense, that’s what all of this is: A fight over what’s real.
    “It’s a nuanced reality that we’re in. They are a type of diamond.”

    Another letter, sent to FTC attorney Reenah Kim by the nonprofit trade organization Jewelers Vigilance Committee on April 2, makes it clear that many in the industry still believe that’s a term that should be reserved exclusively for gems formed inside the Earth. The letter, obtained by Earther under FOIA, urges the agency to continue restricting the use of the terms “real,” “genuine,” “natural,” “precious,” and “semi-precious” to Earth-mined diamonds and gemstones. Even the use of such terms in conjunction with “laboratory grown,” the letter argues, “will create even more confusion in an already confused and evolving marketplace.”

    JVC President Tiffany Stevens told Earther that the letter was a response to a footnote in an explanatory document about the FTC’s recent jewelry guide changes, which suggested the agency was considering removing a clause about real, precious, natural and genuine only being acceptable modifiers for gems mined from the Earth.

    “We felt that given the current commercial environment, that we didn’t think it was a good time to take that next step,” Stevens told Earther. As Stevens put it, the changes the FTC recently made, including expanding the definition of diamond and tweaking the descriptors companies can use to label laboratory-grown diamonds as such, have already been “wildly misinterpreted” by some lab-grown diamond sellers that are no longer making the “necessary disclosures.”

    Asked whether the JVC thinks lab-grown diamonds are, in fact, real diamonds, Stevens demurred.

    “It’s a nuanced reality that we’re in,” she said. “They are a type of diamond.”

    Change is afoot in the diamond world. Mined diamond production may have already peaked, according to the 2018 Bain & Company report. Lab diamonds are here to stay, although where they’re going isn’t entirely clear. Zimnisky expects that in a few years—as Lightbox’s new facility comes online and mass production of lab diamonds continues to ramp up overseas—the price industry-wide will fall to about 80 percent less than a mined diamond. At that point, he wonders whether lab-grown diamonds will start to lose their sparkle.

    Payne isn’t too worried about a price slide, which he says is happening across the diamond industry and which he expects will be “linear, not exponential” on the lab-grown side. He points out that lab-grown diamond market is still limited by supply, and that the largest lab-grown gems remain quite rare. Payne and Zimnisky both see the lab-grown diamond market bifurcating into cheaper, mass-produced gems and premium-quality stones sold by those that can maintain a strong brand. A sense that they’re selling something authentic and, well, real.

    “So much has to do with consumer psychology,” Zimnisky said.

    Some will only ever see diamonds as authentic if they formed inside the Earth. They’re drawn, as Kathryn Money, vice president of strategy and merchandising at Brilliant Earth put it, to “the history and romanticism” of diamonds; to a feeling that’s sparked by holding a piece of our ancient world. To an essence more than a function.

    Others, like Anderson, see lab-grown diamonds as the natural (to use a loaded word) evolution of diamond. “We’re actually running out of [mined] diamonds,” she said. “There is an end in sight.” Payne agreed, describing what he sees as a “looming death spiral” for diamond mining.

    Mined diamonds will never go away. We’ve been digging them up since antiquity, and they never seem to lose their sparkle. But most major mines are being exhausted. And with technology making it easier to grow diamonds just as they are getting more difficult to extract from the Earth, the lab-grown diamond industry’s grandstanding about its future doesn’t feel entirely unreasonable.

    There’s a reason why, as Payne said, “the mining industry as a whole is still quite scared of this product.”

    #dimants #Afrique #technologie #capitalisme

  • Can blockchain technology help poor people around the world?
    http://theconversation.com/can-blockchain-technology-help-poor-people-around-the-world-76059

    In my work as a scholar of business and technology focusing on the impact of blockchain and other modern technologies such as cloud computing, big data and the Internet of Things on poor people, I see four main ways blockchain systems are already beginning to connect some of the world’s poorest people with the global economy.

    The downside of blockchain
    http://www.infodrivenbusiness.com/post.php?post=/2016/04/29/the-downside-of-blockchain

    by Robert Hillard

    Imagine an invention that deliberately wasted resources. Maybe a car that burns oil just to create smoke that is easy to see or an electric light that uses twice as much energy to avoid burning out. That’s exactly what blockchain is doing, consuming large amounts of electricity for no purpose other than making fraud prohibitively expensive.

    I recently had the privilege of collaborating with my colleagues from the Australian Deloitte Centre for the Edge on a report looking into distributed ledgers and the blockchain technology. Reading the result, it is striking how far we still have to go to invent our digital business future.

    As a quick reminder, blockchain is a technology to support the exchange of value or contracts in an environment where anonymity is important and no one is to be trusted. The best known application of blockchain is in the exchange of Bitcoins, a virtual currency.

    Bitcoin Energy Consumption Index - Digiconomist
    https://digiconomist.net/bitcoin-energy-consumption

    Key Network Statistics

    Description Value
    Bitcoin’s current estimated annual electricity consumption* (TWh) 51.82
    Annualized global mining revenues $8,109,412,566
    Annualized estimated global mining costs $2,590,786,398
    Country closest to Bitcoin in terms of electricity consumption Uzbekistan
    Estimated electricity used over the previous day (KWh) 141,960,899
    Implied Watts per GH/s 0.232
    Total Network Hashrate in PH/s (1,000,000 GH/s) 25,475
    Electricity consumed per transaction (KWh) 772.00
    Number of U.S. households that could be powered by Bitcoin 4,797,753
    Number of U.S. households powered for 1 day by the electricity consumed for a single transaction 26.09
    Bitcoin’s electricity consumption as a percentage of the world’s electricity consumption 0.23%
    Annual carbon footprint (kt of CO2) 25,390
    Carbon footprint per transaction (kg of CO2) 378.2

    Bitcoin’s insane energy consumption, explained | Ars Technica
    https://arstechnica.com/tech-policy/2017/12/bitcoins-insane-energy-consumption-explained

    Bitcoin’s energy use should decline in the long run

    Blockchain scalability - O’Reilly Media
    https://www.oreilly.com/ideas/blockchain-scalability

    The three main stumbling blocks to blockchain scalability are:

    1. The tendency toward centralization with a growing blockchain: the larger the blockchain grows, the larger the requirements become for storage, bandwidth, and computational power that must be spent by “full nodes” in the network, leading to a risk of much higher centralization if the blockchain becomes large enough that only a few nodes are able to process a block.
    2. The bitcoin-specific issue that the blockchain has a built-in hard limit of 1 megabyte per block (about 10 minutes), and removing this limit requires a “hard fork” (ie. backward-incompatible change) to the bitcoin protocol.
    3. The high processing fees currently paid for bitcoin transactions, and the potential for those fees to increase as the network grows. We won’t discuss this too much, but see here for more detail.

    #énergie #environnement #gaspillage #électricité #bitcoin #blockchain #pauvreté #économie

  • Alibaba’s next moon shot is to make cities adapt to their human inhabitants, technology seer says | South China Morning Post
    http://www.scmp.com/tech/innovation/article/2123856/alibabas-tech-seer-sees-making-cities-adapt-their-inhabitants-next

    Wang Jian was once called crazy by Jack Ma Yun, the founder and executive chairman of Alibaba Group Holding, for suggesting that the company could have its own mobile operating system.

    That vision, however, proved prescient as smartphones powered by the company’s YunOS mobile operating platform, which was developed by its Alibaba Cloud subsidiary, surpassed 100 million units last year.

    In addition, many of the Hangzhou-based e-commerce company’s recent innovations are rooted in Alibaba Cloud, known as Aliyun in China, as domestic demand for data centre facilities and on-demand computing services delivered over the internet have grown rapidly.

    “It’s not about whether I’m crazy or not, it’s about this era,” Wang, the chairman of Alibaba’s technology steering committee, said in an interview in Hong Kong, where he met with some journalists to talk about his new book Being Online. “[This] is a crazy era, so many new things are happening.”

    Wang, 55, said the city of tomorrow should be able to adapt to its surroundings and inhabitants, almost like a living organism, so that municipal services like public transport, health care and education can be delivered in the right measure and time to minimise waste and optimise usage.

    Alibaba says it is on track to overtake Amazon as world’s top cloud computing services firm

    To that end, a city’s development would be better determined in future by the amount of computing resources it consumes, said Wang. At present, electricity consumption is widely regarded as the measure of development for cities, he added.

    Similarly, the day-to-day behaviour of a city’s residents now has little impact on how a city is organised as well as the way its services are planned and developed, said Wang. That would change with advanced computing technologies that are able to track human behaviour.

    “Do you want to take the bus, or is it because it’s been put there so you’re taking it?” asked Wang, using fixed bus routes as an example of how a city’s services are rigid and do not adapt quickly to changing patterns in the behaviour of its residents.

    Citing the example of a project in northern China, where railway workers were able to tell staff canteens along the line of which meals they plan to have, operators of these dining halls were able to prepare the right amount of food, leading to less waste. [Alibaba Group Holding’s annual Singles’ Day shopping festival on November 11 is a testament to the way cloud computing has changed the retail industry in China. Photo: Edward Wong]

    In its home market in the eastern coastal Chinese city of Hangzhou, Alibaba has created a so-called City Brain that uses artificial intelligence – specifically, deep learning technology that teaches computers to learn and perform tasks based on classifying data – to send out instant traffic alerts and route suggestions to motorists.

    Alibaba said traffic speed has improved by up to 11 per cent in one of Hangzhou’s districts, and that several other cities in China were now implementing smart transport programmes.

    Neil Wang, the Greater China president of consultancy firm Frost & Sullivan, said integrating technology into a city’s operations enabled traffic to be monitored in real-time and fed back to users, allowing drivers to check traffic conditions and adjust their route during the journey, or even find a vacant parking space via a mobile app.

    “Creating a sustainable and self-conscious city with the help of big data technology is the main idea behind this approach,” said Wang. “Smart cities can use the latest digital technologies to improve their resource allocation, as well as the quality of life for their residents. In particular, transport, health care, and education are some of the key areas that will benefit.”

    The global smart cities market, which comprises of interrelated domains that impact urban living, is forecast to reach US$1.2 trillion by 2019, according to research company Technavio in a report published in February. These domains include industry automation, smart grid, security, education, home and building, health care, transport, and water and waste.
    Smart cities can use the latest digital technologies to improve their resource allocation, as well as the quality of life for their residents.

    New York-listed Alibaba, which owns the South China Morning Post, is not alone in trying to make cities more adaptable to human behaviour. Many other companies, including Google owner Alphabet, are involved in various projects around the world that integrate information technology with city planning.

    In October, Alibaba said it will double research and development spending to US$15 billion over the next three years to develop futuristic technologies that could transform whole industries, or so-called moon shot projects. To do that, the company will set up research labs around the world and hire scientists.

    For Wang, Alibaba’s annual Singles’ Day shopping festival on November 11 is a testament to the way cloud computing has changed the way people shop in China. This year’s edition of the 24-hour shopping promotion chalked up a record of more than US$25 billion in sales.

    The event is made possible by the coming together of mobile payments, e-commerce and back-end logistics underpinned by cloud computing.

    Smart cities: Digital world unlocks door to the future

    “If you think about it, being able to shop at night while tucked into bed, and having that parcel land on your doorstep the next day is in itself crazy,” Wang said.

    There will be more inventions that today may look wacky but could be the norm of tomorrow, Wang said. Citing the example of Thomas Edison’s light bulb, which made it possible to demonstrate the usage of electricity, he said future applications on the internet may exceed the limits of human imagination today.

    “We’re just at the beginning of the beginning of the beginning.”

    Additional reporting by Zen Soo
    This article appeared in the South China Morning Post print edition as: Smart cities next idea in tech chief’s crazy era

    #Chine #e-commerce #smart-cities #surveillance #disruption

  • Traffic Wouldn’t Jam If Drivers Behaved Like Ants - Facts So Romantic
    http://nautil.us/blog/-traffic-wouldnt-jam-if-drivers-behaved-like-ants

    Ant colony optimization has itself migrated with impressive speed and range, and has been taken up residence in all kinds of research pursuits, from estimating electricity consumption in Turkey to designing supply chains to the design of tall bridge piers to robot learning.Photograph by Bernardinus Nugraha / FlickrAs someone so flummoxed by traffic I wrote a book about it, I have a near-clinical aversion to vehicular congestion. My global default strategy is to simply drive as little as possible, but there are times when I simply must put foot to gas pedal. Like many, I have become increasingly dependent on the Waze app, which, via each drivers’ smartphone, turns an inchoate, undifferentiated mass of drivers into something resembling a collective form of networked intelligence. Waze, (...)

  • Turkey blames sabotage, cyberattacks from US soil for power cuts — RT News
    https://www.rt.com/news/372957-turkey-power-grid-hacking

    Sabotage of underground powerlines and cyberattacks originating in the US were contributing factors in the power outages which Istanbul and other parts of Turkey have been experiencing since last week, the country’s energy minister said.

    “Yesterday, we faced an intense, US-originated cyber attack. These attacks have been carried out systematically on different parts of the Energy Ministry, but we have repelled them all,” Turkish Energy Minister Berat Albayrak said in an interview with A Haber TV.

    He added that ministry staff responding to power cuts discovered sabotage of underground lines in three districts of Istanbul.

    #Turquie #Electricité #Complot

    • Et pour quelques éléments d’explications moins complotistes : privatisation, météo, géopolitique, incompétence de l’État...

      Turkey’s energy watchdog EPDK imposes two-month cap on power prices
      http://energy.economictimes.indiatimes.com/news/power/turkeys-energy-watchdog-epdk-imposes-two-month-cap-on-power-prices/56386439

      ANKARA: Turkey’s energy watchdog EPDK imposed a two-month cap of 500 liras per megawatt hour on electricity prices on Friday after prices rose to their highest level in years.

      Turkey’s daily natural gas consumption has risen to record highs since December, largely due to colder-than-usual weather triggering higher power consumption.

      The day-ahead electricity price at Turkey’s energy exchange (EPIAS) rose to 586 lira ($162) per megawatt hour last month with hourly prices as high as 1,900 lira, data from the exchange showed. Such levels were the highest in years, traders said.

      In a decision announced in the Official Gazette on Friday, Turkey’s EPDK said a 500 liras ($138.06) per megawatt hour cap would be imposed on electricity prices from January 6 to March 1, 2017.

      “With this decision, the EPDK is attempting to protect the consumer, supplier and producer from prices rising and falling unpredictably, and reduce the effects of seasonal weather conditions on energy prices,” the EPDK said in a statement.

      Day-ahead power price in EPIAS on Friday stood at 176.03 lira per MWh, data on its website showed.

      Traders have criticised poor supply planning and lack of coordination by the state energy authorities.

      State pipeline operator Botas has cut 75 percent of supplies to gas-fired power plants and advised industrial firms to cut non-critical output.

      In addition to mounting demand triggered by persistent cold weather, Turkey decided not to set its clocks back as usual this winter which led to a rise in electricity consumption rather than the planned energy savings.

  • European power is slipping away from King Coal - Climate News Network

    http://www.climatenewsnetwork.net/european-power-is-slipping-away-from-king-coal

    By Alex Kirby

    Analysis of falling demand for electricity within the EU sends a stark warning to investors in new coal plants that their assets could be left stranded.

    LONDON, 10 June, 2015 − Coal, the muscle that for two centuries powered Europe’s economic dominance of the world, is steadily losing its grip as cleaner fuels take its place and energy efficiency cuts electricity consumption, according to new analysis.

    The European Union’s electricity demand fell by 3.3% from 2008 to 2013 − even though GDP grew by 4.1% − and the analysts say changing market conditions for utilities leaves new coal plants failing to generate positive cash-flows even in the most optimistic scenario.

    #climat #charbon

  • Electricity consumption in Turkey soars 78 pct over decade
    http://www.hurriyetdailynews.com/electricity-consumption-in-turkey-soars-78-pct-over-decade.aspx?p

    Istanbul, the largest city in the country by population and industry, consumes more electricity than eight OECD countries, according to figures.

    Istanbul used 36.8 billion kWh electric in 2013, TEİAŞ said, while data released by the International Energy Agency (IEA) has shown that some European countries use less than the city of Istanbul.
    Hungary consumed 34.4 kWh of electricity in 2013, while Denmark used 30.4, Slovakia 28.6 and Ireland 27.7.

    #Electricité
    #istanbul