DiamondBuzz
De Beers launches DiamondProof; distinguishes naturals from LGDs within seconds
De Beers has launched a diamond verification device aimed specifically at retailers. DiamondProof distinguishes natural gems from LGD in store within seconds as the customer looks on. DiamondProof distinguishes between the chemical composition of natural diamonds and LGD. De Beers says fewer than 1 per cent of diamonds will need additional evaluation and it guarantees that no synthetic diamonds will be mistakenly identified as natural.
De Beers Group announced that its innovative retail-facing diamond verification device, DiamondProof, has landed in select retail stores for the first time, giving consumers the ability to witness just how quickly the device can distinguish natural diamonds from non-natural diamonds, such as laboratory-grown diamonds (LGDs) and diamond simulants, providing a tool for retailers to help educate their customers on the differences between natural diamonds and other products. With research showing that almost half of consumers are unaware that LGDs can be readily detected, this easy-to-use device will enable retailers to show their customers just how quickly natural diamonds can be identified.
The first DiamondProof prototype instrument was unveiled at the JCK show in Las Vegas in June 2024 and has been developed to rapidly and easily screen both loose diamonds and those set in jewellery. With a zero percent ‘false positive rate*,’ the device will never mistake a lab-grown diamond as a natural diamond and delivers results within seconds.

Sandrine Conseiller, CEO of De Beers Brands, said: “Natural diamonds and LGDs are two fundamentally different products. Natural diamonds are rare, one-of-a-kind miracles of nature that come to us from the earth through heat, pressure and time. This incredible journey is what makes them the ultimate marker of life’s most profound emotional moments. Consumers should be able to have confidence in such a meaningful purchase, and DiamondProof allows retailers to offer them greater peace of mind. We are in a new era of transparency at retail, and customers deserve to know what they are buying.”
DiamondBuzz
Lesotho’s Kao Diamond Mine To Halt Operations Amid Industry Slump
The Mine’s Operator, Storm Mountain, Cited A Severe Financial Crisis Driven By A Prolonged Drop In Global Rough-diamond Prices, Rising Middle East Conflict
Lesotho’s largest diamond mine, Kao, will cease operations on June 30 and transition to care and maintenance. The mine’s operator, Storm Mountain, cited a severe financial crisis driven by a prolonged drop in global rough-diamond prices, rising Middle East conflict-related fuel costs, and stiff competition from lab-grown diamonds.
Despite a warning last October that the mine required $13 million in fresh capital to survive, the necessary investment did not materialise. According to CEO Neo Hoala, the steep market decline made continued operations unsustainable. The shutdown will impact roughly 750 workers.
The mine’s financial downturn is stark: in 2024, Storm Mountain sold 250,000 carats for $50 million—a massive drop from its $105 million revenue in 2022. Kao’s suspension reflects a broader crisis in the diamond sector, following recent insolvencies and closures at Canada’s Ekati mine and South Africa’s Ekapa and Finsch mines.
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