Welcome to Edition 580 (Updated) of WINC, IDMA’s Weekly Internet News Collection – September 1, 2026
Reading Time: 3 minutes Key takeaways • Scientists at De Beers examined a 6.87-carat lab-grown CVD diamond intentionally shaped to imitate a rough natural crystal. • Analysis by the GIA identified key irregularities, including non-parallel faces and microscopic polishing lines, revealing its synthetic origin. • There is currently no evidence of widespread switching, but screening instruments can be adapted for rough material if needed. It was only a matter of time. Rapaport reported earlier this week that scientists at De Beers examined a lab-grown 6.87-carat stone that growers intentionally shaped to imitate a rough natural-diamond crystal. 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 submitted by the De Beers UK science and technology team for the spring issue of Gems & Gemology, the quarterly journal of the Ge...