The GIA (Gemological Institute of America) has graded a 34.59-carat emerald-cut stone (G color, VS2 clarity) stone, “its biggest ever lab grown polished diamond,” according to IDEX Online.
Produced by India-based company Ethereal Green Diamond, the diamond is double the size of the previous record holder, a 16.41-carat princess-cut diamond made by Shanghai Zhengshi Technology in China, which the GIA graded in January 2022.
Tom Moses, GIA executive vice president and chief laboratory and research officer., commented: “This more than two-fold increase in size within one year is an impressive technical achievement in CVD diamond growth. With such production improvements, correct identification and disclosure are critical to maintaining consumer trust.”
