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GIA HPHT
Undisclosed Green Synthetics Raise GIA Eyebrows
Twenty-five undisclosed lab-grown diamonds have turned up atthe Gemological Institute of America (GIA) — including several with a raregreenish color. The GIA’s lab in Carlsbad, California, recently received thestones — weighing from 0.46 to 0.52 carats — for...
Technology May 26, 2019 Rapaport News
GIA
GIA Sheds Light on De Beers’ Synthetics
Two white lab-grown diamonds from De Beers’ Lightbox brandhave G color and VS clarity, the Gemological Institute of America (GIA) saidafter examining the stones. Lightbox doesn’t offer grading reports for its products, andhadn’t previously...
Polished Markets Feb 07, 2019 Joshua Freedman
GIA mistaken
‘Lab-Grown’ Diamond Turns Out to Be Natural
A client of the Gemological Institute of America (GIA)wrongly submitted a natural diamond as a lab-grown stone, the organizationsaid.The GIA’s Carlsbad laboratory recently received the round brilliant,2.23-carat, D-color diamond, which the customer had sent in for asynthetic-diamond...
Polished Markets Feb 06, 2019 Rapaport News
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