Rio Tinto’s fading Argyle diamond mine looks set to go out on a high, after posting its best financial performance in years. Diamond markets are notoriously opaque, and Argyle’s performance cannot be gleaned through the financial results Rio reports every six months. But new filings with the Australian Securities and Exchange Commission (ASIC) reveal revenues … Read more
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 … Read more
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 … Read more
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, … Read more
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 … Read more
The 1,758 carat rough diamond recovered from the Karowe mine.
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 … Read more
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 … Read more
