GIA grades largest lab-grown diamond at 34.59 ct

The GIA laboratory in Hong Kong recently examined the largest lab-grown diamond produced by the chemical vapor deposition (CVD) method it had ever encountered.

GIA graded the 34.59 ct. emerald-cut diamond as G color, VS2 clarity. It was produced by Ethereal Green Diamond in India, and measures 24.94 x 13.95 x 9.39 mm.

“This more than twofold increase in size within one year is an impressive technical achievement in CVD diamond growth,” said Tom Moses, GIA executive vice president and chief laboratory and research officer, in a statement.

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