A diamond cutter’s ultimate quest is to optimise the yield, beauty and profit from a rough stone. New technology is enabling manufacturers to map rough diamonds and assess their polished potential ...

Leobardo Segura Meza, 27, of Pacoima suffers from silicosis, an incurable lung disease that has been afflicting workers who cut and polish engineered stone high in crystalline silica. (Mel Melcon / ...

Lucara Diamond discovers a 2,036-carat diamond in Botswana, reaffirming Karowe as the world's most incredible mine.

DUBLIN--(BUSINESS WIRE)--Research and Markets (http://www.researchandmarkets.com/research/6v2d54/gem_stone_cutting) has announced the addition of the "Gem Stone ...

Senate Bill 20 would create a system to certify fabrication shops where workers cut stone slabs to fashion them into countertops. Manufacturers could provide their slabs only to certified shops.

South Africa’s second-biggest diamond producer by value, the JSE-listed Trans Hex, is testing the economic viability of local diamond beneficiation. It is doing so at a small-scale ...

The 100-carat Emerald-cut perfect diamond joins five similarly rare stones in auction history. (Photo courtesy Sotheby’s) Today, Sotheby’s announced that a rare Emerald-cut 100.2-carat perfect diamond ...