DiamondBuzz
CVD Synthetic Fashioned To Imitate A Rough Natural Diamond
The Near-Colorless Stone Is Believed To Be The First Time Creators Of A Synthetic Chemical Vapor Deposition (CVD) Diamond Have Shaped It To Resemble A Rough Diamond
The 6.87-carat near-colorless CVD diamond was shaped to resemble a natural rough octahedral crystal but showed distinct synthetic features under microscopic and spectroscopic analysis.GIA’s tests confirmed the stone’s synthetic origin, noting polishing marks, facet junction roughness, and luminescence patterns inconsistent with natural diamonds.
No evidence currently suggests widespread substitution of synthetics for rough natural diamonds, but existing detection tools could be adapted if such cases increase.
The near-colorless stone is believed to be the first time creators of a synthetic chemical vapor deposition (CVD) diamond have shaped it to resemble a rough diamond, according to an article in the spring issue of the institute’s Gems & Gemology quarterly journal.
Upon investigation with the use of raman spectroscopy, the results confirmed that the material was a diamond, with its near-octahedral shape similar to that of a natural rough crystal. Further analysis showed that it was not a true octahedron, as only one set of opposing faces was parallel. Microscopic observation under differential interference contrast revealed extremely flat faces marked mainly by parallel polishing lines, unlike the growth steps and trigons typically seen on natural octahedral faces. The facet junctions were extremely rough, possibly due to measures taken to improve the color, after which the main faces appear to have been repolished, the institute explained.
DiamondBuzz
Richemont and Signet Jewelers Could Join Global Diamond Consortium In Bid For De Beers
Richemont, Signet Would Connect The Consortium To Key Global Growth Vectors Spanning Luxury High Jewelry and Mass-Market Retail.
The Global Diamond Consortium (GDC)
Richemont and Signet Jewelers are reported to be in talks about joining the Global Diamond Consortium (GDC), the preferred bidder for De Beers according to a Bloomberg News report.
​GDC was selected in July 2026 as one of Anglo American’s preferred bidders for De Beers as part of Anglo American’s ongoing corporate restructuring.
​The potential inclusion of Richemont—owner of luxury Maisons including Cartier and Van Cleef & Arpels—and Signet Jewelers—the world’s largest retailer of diamond jewelry, operating brands such as Kay Jewelers, Zales, and Jared—would connect the consortium to key global growth vectors spanning luxury high jewelry and mass-market retail.
​Strengthening the Natural Diamond Ecosystem: Participation by major luxury brands and global retail leaders reinforces commitment across the entire value chain—from responsible mining and manufacturing to consumer engagement.
​Balanced Governance Structure: Discussions center on potential minority equity positions that would support long-term category growth while maintaining appropriate separation between ownership and commercial strategy.
​Broad Stakeholder Participation: The consortium continues to advance talks with host governments, including discussions with the Government of Botswana regarding a potential increase in its equity share in De Beers from 15% to approximately 25%, alongside participation from private investors and southern African host nations.
​​Discussions between GDC, Richemont, Signet, and participating government stakeholders remain ongoing. Terms of any potential participation, including the size of equity interests, have not been finalized and remain subject to regulatory approvals and definitive documentation.
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