De Beers Partners with Stuller to Expand DiamondProof Distribution

De Beers Group has partnered with Stuller to expand the reach of its DiamondProof device across the US retail sector. 

The miner announced the collaboration with Stuller, the largest US jewelry manufacturer, on Monday, noting that the company would serve as DiamondProof’s official sales distributor. The move follows the device’s retail launch in February and aims to increase access to diamond-verification tools for US jewelers. 

DiamondProof rapidly identifies natural diamonds, helping ensure that lab-grown stones don’t get misclassified. Designed for use at retail counters or in the back office, it provides real-time verification that customers can view directly. 

Stuller will manage not only sales and distribution but will also provide technical support and after-sales service to ensure seamless integration for retailers. The company’s network and industry experience make it an “ideal distributor” to scale DiamondProof’s presence across the US, De Beers said. 

“This collaboration is a significant step forward as we aim to empower retailers with the tools and support they need to enhance customer confidence in natural-diamond purchases and advance trust and transparency in the industry,” said Sarandos Gouvelis, senior vice president of pricing, product and technology development for De Beers.