Manufacturers
Russian firm creates 5-carat synthetic diamond
![](https://www.jewelleryfocus.co.uk/wp-content/uploads/2015/02/2388e42d-7473-4cc4-896a-fc63d632adfc-medium-e1424431126954.jpeg)
A Russian laboratory-grown diamond manufacturer, New Diamond Technology, is claiming it has produced a 5.11-carat diamond, the largest man-made, polished, near-colourless stone ever produced.ย
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