DiamondBuzz
De Beers, Endiama report first new kimberlite field in over 30 years in Angola
De Beers Group, in partnership with Angola’s Endiama, has discovered a new kimberlite field—its first in over 30 years—during initial drilling in July 2025. The find marks a major milestone in their long-term collaboration to responsibly develop Angola’s diamond resources.
De Beers Group, in partnership with Angola’s national diamond company Endiama, has reported the discovery of a new kimberlite field in Angola—the company’s first such find in over 30 years.The breakthrough occurred in July 2025, when the joint venture intersected kimberlite in its very first drill hole, targeting a cluster of high-priority sites identified through airborne surveys earlier in March 2025.
In the months ahead, De Beers and Endiama will carry out additional drilling, ground geophysical studies, and laboratory testing to confirm the nature of the kimberlite and evaluate its diamond-bearing potential.The find marks a significant milestone in the partnership between De Beers and Angola. It comes on the back of two Mineral Investment Contracts signed in April 2022 and a Memorandum of Understanding agreed at the 2024 Mining Indaba. These agreements have laid the foundation for a long-term collaboration focused on responsibly developing Angola’s diamond resources.
Al Cook, CEO of De Beers Group, said: “Angola is, in our view, one of the best places on the planet to look for diamonds, and this discovery reinforces our confidence. It is a powerful reminder of what can be achieved through partnership, and I commend President Lourenco and his government for all the work they have done to enhance transparency, adopt international best practices, and create a business friendly environment, all of which has enabled us to return to Angola and seek new sources of supply. We are excited about the role De Beers can play in helping the country deliver on its huge potential, both below and above the ground.”
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.
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