News – Page 104 – The Diamond Certification Laboratory of Australia (DCLA)

ABC NEWS RADIO: How do you like your diamonds?

Diamonds that could only just fit in your hand have been unearthed in Botswana recently so overnights polished up their knowledge on what modern day diamond mining involves.

The modern day diamond competes with synthetic diamonds but Roy Cohen from the Diamond Grading Laboratory of Australia reckons they’re as popular as ever.

How does the cut change that value, what are Australian diamonds like and where can you buy the cheapest diamond in the world? Find out on this weeks talking topic about Diamonds.

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Diamond Miners Push Back on Ethics Claims

The major diamond miners have weighed in on the debate over which diamonds are more ethical, claiming their production uses less than one-third of the energy it takes to create a diamond in a lab.

The operations of companies that make up the Diamond Producers Association (DPA) emitted an average of 160 kilograms of carbon dioxide (CO2) per 1-carat of polished diamonds produced in 2016, according to a study commissioned by the DPA and carried out by Trucost ESG Analysis, which is part of S&P Global. That compared to the estimated greenhouse gas emissions of 511 kilograms of CO2 for the average 1-carat lab-grown polished stone.

A debate has ensued in recent years over which diamond is more environmentally friendly (or harmful), with many lab-grown-diamond companies claiming to have the greener product in their advertising. In April, the Federal Trade Commission (FTC) warned several synthetics producers against using claims such as “eco-friendly,” “eco-conscious” or “sustainable” without qualification.

“This independent research report breaks outdated stereotypes and misconceptions and identifies the next set of challenges that must be met to continue to evolve and improve as an industry,” said DPA CEO Jean-Marc Lieberherr in a statement on Thursday.

The DPA members have set goals to reduce their carbon footprint, while the DPA will monitor their progress in achieving the United Nations Sustainable Development Goals.

The report, titled “The Socioeconomic and Environmental Impact of Large-Scale Diamond Mining,” highlights the benefits to employees of DPA members, the impact those companies collectively have on the communities in which they operate and their environmental stewardship.

Together, the miners generate more than $16 billion in net socioeconomic and environmental benefits through their operations, Trucost reported.

Despite significant progress toward responsible and transparent practices over the past 15 years, the current reality of the diamond-mining sector remains largely unknown, the authors noted. “This report provides access into a highly scrutinized, yet largely misunderstood sector,” the report added.

The DPA consists of seven companies, with Alrosa, De Beers, Rio Tinto and Petra Diamonds participating in the study. Dominion Diamond Mines, Lucara Diamonds and Murowa Diamonds are the other members.

The Lab Grown Diamond Association did not reply to a request for comment from Rapaport News by press time.

Image: Rough and polished diamonds. (Diamond Producers Association)

Source: Diamonds.net

Christie’s to Sell Historic Golconda Diamond

Christie’s New York auction will feature a 17.21-carat diamond given to Queen Charlotte of Great Britain by a regional ruler in India.

The pear-shaped, brilliant-cut diamond, called Arcot II, was found in India’s Golconda region in the late 18th century. The stone, presented to the queen by the Nawab of Arcot, will go under the hammer at the Maharajas & Mughal Magnificence sale on June 19, the auction house said last week.

The stone is one of a number of Indian jewels from the Mughal period featured at the sale. The lots on offer span a period of more than 500 years.

“This landmark collection traces the history of Mughal jewels and objects to [the] present day, and represents the most significant collection of its type ever to come to auction,” said François Curiel, chairman of Christie’s Europe. “The collection begins in Mughal India, the most important dynasty that ruled the country, famous for its emeralds, diamonds, sapphires, rubies, jeweled weapons and objects that are bejeweled beyond belief.”

Christie’s will also offer the Mirror of Paradise, a 52.58-carat, D-color, internally flawless Golconda diamond, as well as carved Mughal emeralds ranging from approximately 10 carats to over 200 carats.

Other notable lots include the Imperial Spinel Necklace and sarpechs — traditional Indian turban ornaments. A diamond necklace originally from the collection of the Nizam of Hyderabad, featuring almost 200 carats of Golconda diamonds, will also be for sale.

The Mughal jewels are from the collection of the Al-Thani dynasty, the ruling family of Qatar. The auction house will preview the items between April 24 and June 18 in London, Shanghai, Geneva, Hong Kong and New York.

Image: The Arcot II diamond. (Christie’s)

Source: Diamonds.net

Diamond Trading Goes Online as Lucara Takes on Industry Goliaths

The opaque diamond trade may be ripe for disruption.

Lucara Diamond, which recently found the second-largest diamond in history in Botswana, is taking on industry giants such as De Beers and Alrosa PJSC with an online platform to replace the current physical auctions.

The service allows Lucara to match buyers’ requirements, not only saving jewelers the trouble of traveling to Botswana but also ending the practice of buying stones by the bucket. They typically can only use some, and then have to sell the rest on the secondary market.

“For the first time ever, manufacturers buy only what they want, they don’t have to carry all this extra inventory,” Eira Thomas, Lucara’s chief executive officer, said in an interview in Stockholm. “The large integrated jewelry companies don’t want to be in the business of secondary trading. They’re just trying to source diamonds for their own products.”

In a series of trials, Vancouver, Canada-based Lucara claims that prices were 8 percent over Lucara’s traditional market price. It’s now trying to bring other independent producers on board, with the aim of moving at least a portion of the $18 billion annual diamond trade onto its site called Clara.

Whether Lucara will be able to attract major producers to use its system remains to be seen. De Beers, the world’s biggest diamond producer, is famous for its tight control over the diamond market and has relied on its own system of selling gems for decades.

“If we can get to $1.5 billion transacted through the platform, the cash flow we generate from Clara will be as important as the cash flow we generate from the mine,” Thomas said. “We’re taking baby steps right now, but each quarter we’ll report, we expect the volume to increase.”

Clara incorporates blockchain technology, which is seen as a promising avenue for an industry that has been plagued by ethical problems, including the trade in so-called “blood diamonds” used to finance armed conflicts. Lucara is far from the only miner who has seen the benefits of the digital ledger in guaranteeing the provenance of its product.

De Beers has launched Tracr, a platform aiming to increase the traceability of diamonds using blockchain. That pilot program was joined by Russia’s Alrosa, another giant in the business, in October last year.

Lucara’s Clara uses similar technology, but its main purpose is to match buyers and sellers. While it’s difficult to judge Clara in an early stage, Ola Sodermark, an equity analyst at Kepler Cheuvreux, sees potential in the initiative. The key is to get more producers to join the platform, he said.

“Lucara’s own volumes aren’t sufficient to make this fly,” he said. “The question is whether they’re too early with this technology, or if the market is ready for it.”

Lucara was founded by Thomas in 2007, together with Catherine McLeod Seltzer and current chairman Lukas H. Lundin, whose family oversees a commodities empire that includes stakes in oil, gold and solar power across the globe. The Lundin family holds an 18 percent stake in the company through the investment company Nemesia Sarl.

Source: bloomberg

Document Outlining Cutting of Cullinan Headed to Auction

London—A history buff could soon be the owner of the original document outlining the cutting and cleaving of the historic Cullinan diamond.

At Bonhams’ London Jewels sale scheduled for April 30, the auction house will put on the block the historic document that facilitated the cutting of the world’s largest rough diamond.

Dated Jan. 29, 1908, the original manuscript is for the ‘Agreement for the Inspection of the Cullinan Diamond’ between the representatives of King Edward VII and London diamond brokers M.J Levy & Nephews.

This document brokered the handling and cutting of the 3,106-carat Cullinan diamond—which remains the largest gem-quality rough diamond ever discovered—by the renowned Asscher Company to create the nine principal Cullinan Diamonds, Bonhams said.

It appointed M.J Levy and Nephews as “inspectors” of the Cullinan and outlines the parameters and guidelines of how it had to be handled, as well as the duties of each party.

The auction lot includes the original documents as well as a paste replica of the Cullinan as it appeared in its rough form and two replica sets of the nine principal diamonds cut from the stone.

The lot is estimated to sell for between $2,600 and $3,900.

The Cullinan rough diamond was discovered near Pretoria, South Africa, in 1905. So large it was believed to be a piece of rock crystal instead of a diamond, the rough was named after Thomas Cullinan, chairman of the mine where it was found.

The stone initially failed to find a buyer and was eventually sold for £150,000 to the South African Transvaal Colony government in 1907, which then presented it to King Edward VII on his 66th birthday in November of that year as a symbol of South Africa’s loyalty to the Crown, Bonhams said.

After the king received the stone, he was advised by his private secretaries to consult London diamond brokers Messrs M.J. Levy & Nephews about the cutting of the rough given the complexity and risk of the task.

Arthur and Alexander Levy then brokered it to be cut and polished with Asscher in Amsterdam, which had just cut the 995.2-carat Excelsior Diamond in 1903.

An image from the cleaving of the Cullinan rough diamond by Joseph Asscher

Since it wasn’t possible to shape and polish the stone without splitting it, the responsibility fell to Joseph Asscher, the house’s most skilled cleaver, to do the task.

After studying it at length, Asscher created a 6.5-mm deep incision in the diamond over several days. Then, in February 1908, his first attempt to cleave it ended when the blade on his tool broke as soon as he struck the stone.

After making stronger tools, he tried again the following week, successfully cleaving the Cullinan rough into two parts—one weighing 1,977 carats and the other 1,040 carats.

These stones were further polished and cut in the months following to create nine main stones, 96 smaller diamonds, and several polished “ends.”

Those nine principal diamonds, named Cullinan I through Cullinan IX, now form part of the collection of the Crown Jewels and the collection of Her Majesty The Queen.

Cullinan I remains the largest polished white diamond in the world, weighing 530.20 carats. It sits on top of the Sovereign’s Sceptre.

The Cullinan II, weighing 317.40 carats, is set at the front of the Imperial State Crown, currently located in the Tower of London.

Bonhams said the agreement documents and paste replicas of the stones were handed down through the business and subsequent owners of M.J. Levy & Nephews.

The auction house said this is the first time they are being offered for sale on the open market.

Source: nationaljeweler

China Bourse to Promote Lab-Grown Diamonds

The Guangzhou Diamond Exchange (GZDE) has signed a strategic cooperation agreement with China’s major synthetics suppliers to develop and promote lab-grown diamonds in the country.

The parties signed the contract last week during a forum on the benefits of synthetic stones that took place during the 2019 China International, Gold Jewellery & Gem Fair in Shenzhen.

The partnership is an effort to provide consistent demand for lab-grown diamonds in China’s fluctuating market, GZDE, which is not a member of the World Federation of Diamond Bourses, said Tuesday.

“The high-tech genes of lab-grown diamonds, the ability [for] stable supply, and its outstanding appearance, [which is the] same as natural diamonds, have opened a window for this new material,” said GZDE chairman Zhu Yongsheng. “In addition to the innovative application in jewelry through creative design, it could [create] cross-border development with other industries.”

The GZDE will promote lab-grown-diamond trading as a separate business, with synthetics dealers using a new GZDE logo that references them as a lab-grown seller, the exchange added.

Clarification, April 28, 2019: This story has been updated to clarify that the Guangzhou Diamond Exchange is not a member of the World Federation of Diamond Bourses.

Image: Lab-grown diamond exhibit at the forum. Guangzhou Diamond Exchange

Source: Diamonds.net

Lucara Diamond Corp. Recovers Record 1,758 Carat Diamond from Karowe

A giant 1,758-carat diamond, the second-biggest ever discovered, has been found in Botswana. But unlike its rivals, it won’t fetch a record-breaking price.

Lucara Diamond Corp. said it unearthed the stone — roughly the size of a tennis ball — at its Karowe project in Botswana, a mine renowned for its huge gems including the previous holder of the No. 2 position. Still, the company said the diamond is a near gem of variable quality, meaning it won’t yield incredibly valuable polished diamonds on par with earlier finds.

Lucara’s Karowe mine is becoming famous for giant stones. In 2015, Lucara found the 1,109-carat Lesedi La Rona, which at the time was the second-largest ever and eventually sold for $53 million. The mine has also yielded a 813-carat stone that fetched a record $63 million. Those two gems were both much more valuable Type-IIa stones.

Still, the latest find shows that Karowe’s plant can process and detect huge gems without breaking them, a consistent headache when trying to separate brittle stones from hundreds of tons of waste rock.

“Karowe has now produced two diamonds greater than 1,000 carats in just four years, affirming the coarse nature of the resource and the likelihood of recovering additional, large, high quality diamonds in the future,” Eira Thomas, Lucara’s chief executive officer, said in a statement.

Lucara, based in Vancouver, Canada, rose as much as 12 percent, the most in a year.

The biggest diamond ever discovered is the 3,106-carat Cullinan, found near Pretoria in South Africa in 1905. It was cut into several polished gems, the two largest of which — the Great Star of Africa and the Lesser Star of Africa — are set in the Crown Jewels of Britain.

Source:bloomberg

ALROSA recovers “Zarya” a 119 carat gem quality stone

Alrosa revealed a 118.91 carat gem quality diamond that is recovered from its “International” mine, which is located close to the town of Mirny in the Sakha Republic of the Russian Federation. The company said that stone, which was found on April 16, is the largest gem-quality diamond on found at the International pipe in the past two years. A similar, large gem-quality diamond, weighing 109.61 carats, was mined here in the summer of 2017.

The newly mined light yellow rough diamond has “salient edges, one of them with cleavage, and small inclusions in the central zone,” the firm said in a news release

“This crystal is unique as it has a large clean area despite the inclusions in the center – this makes it a gem-quality diamond. Well known hallmarks of the diamonds from the International kimberlite pipe are regular shapes and purity. That is exactly the pipe that most often brings ALROSA regular shape octahedrons with smooth edges,” explained Evgeny Agureev, Member of the Management Board, Director of the United Selling Organization at ALROSA.

The diamond was mined right on the eve of the launch of Zarya a new deposit of ALROSA at Aykhal mining and processing plant. The company considers assigning the name “Zarya” to the new extracted crystal in honor of the launch event.

Argyle diamond set to fetch millions

This rare sparkler may be worth millions but its discovery at Argyle in the Kimberley won’t be enough to stop the mine’s closure next year.

Mine operator Rio Tinto says the Argyle Octavia is one of the biggest gem quality white diamonds found at the mine over its 35 year history.

The 28.84 carat rock was recovered from the east Kimberley mine last month.

Argyle Diamonds general manager Andrew Wilson said the Argyle Octavia was unique in its size, shape and provenance and would take its place in history as one of a few special large white diamonds ever to be produced from the mine.

The stone will be sold by private tender at the world’s diamond capital, Antwerp in Belgium, later this year.

Collectors, jewellers and traders will be invited to place confidential bids, with the rough diamond going to the highest bidder.

The rock is expected to attract strong bidding given only about 20 similar stones have been recovered from Argyle and the mine’s imminent closure means it will be considered a legacy piece.

Its rare and beautiful octahedral shape is also likely to attract a strong premium compared to similar gems.

Alluvial diamond mining started at Argyle in 1983, moving to an open pit operation between 1985 and 2013, followed by an underground operation from 2013 using a block cave method of mining.

But there is no economic case for continuing mining at even deeper levels past 2020.

Rio will seek to redeploy the more than 450 staff and contractors at the mine to its other operations as the mine winds down.

Some staff will remain to help with the rehabilitation of the site, which is expected to cost hundreds of millions of dollar over several decades.

Source: thewest

Okavango Diamond Company finds and polishes a 20 carat unique fancy deep blue

The Okavango Diamond Company revealed a unique polished blue diamond weighing over 20 carats, the biggest blue diamond discovery ever made in Botswana.

GIA graded the 20.46 carat gem as a type IIb, Fancy Deep Blue, oval brilliant cut, VVS2.

The diamond was discovered at Botswana’s Orapa mine as a 41.11 carat rough stone. Its unique and vibrant blue color is the result of the inclusion of boron which between one to three billion years ago was present in the rocks of ancient oceans during violent diamond forming volcanic activity.

“From the first moment we saw the diamond, it was clear we had something very special. Everyone who has viewed the 20 carat polished diamond has marveled at its unique coloration which many see as unlike any blue stone they have seen before. It is incredibly unusual for a stone of this color and nature to have come from Botswana, a once in a lifetime find, which is about as rare as a star in the Milky Way,” says Marcus Ter Haar, MD of Okavango Diamond Company.

“It is little surprise blue diamonds are so sought after around the world as only a very small percentage of the world’s diamonds are classified as fancy color and, of those, only a select few can be classified as being Fancy Blue,” he added.

“At ODC we have access to 15 percent of Debswana’s run of mine production and feel extremely fortunate to be involved in such a singular find. Only a handful of similar blue stones have come to market during the last decade, of which the Okavango Blue rightfully takes its place as one of the most significant,” said Ter Haar.

The iconic Okavango Blue will be showcased over the coming months to promote Botswana as a leading global producer of natural ethical diamonds with an anticipated sale toward the end of the year.

Source: idexonline