The device basically illuminates a batch of stones in a pan. Synthetic or laboratory grown stones are revealed when they show a strong phosphorescent glow, something not seen in natural diamonds.
Julian Regan-Mears, head of external communications, De Beers Group of Companies informed that the Group has actually invested close to $50 million over the past few years to develop technology to detect lab-grown diamonds. Kendall, in fact, went on to add that the Group actually is engaged in making lab-grown diamonds at its own synthetic diamond facility Element Six (that makes synthetic diamonds for industrial purposes like drilling etc) as this helps them to have insight into the process of manufacturing lab-grown diamonds that, in turn, offers technological know-how to detect such diamonds as such.
Lab-grown diamonds, as such are a very small share of the overall diamond market. While 140 million carats of diamonds are produced annually, only around 200,000-250,000 carats of lab-grown diamonds are made each year.
Meanwhile, one of the leading diamond companies in the world, is very much committed to its India plans. It invested $5 million to expand its diamond grading and testing centre in Surat. The Group had already invested $10 million in 2015 to establish the facility which has a capacity to process over $500 million of diamonds every year.
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