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Fake green rough diamond
GIA Exposes Rough Diamond with Fake Green Color
Manufacturers coated a rough diamond with a green substanceto imitate a natural color, the Gemological Institute of America (GIA) saidafter the stone turned up for grading.The presence of chromium oxide powder on the surface ofthe 6.49-carat crystal...
Rough Markets Aug 19, 2019 Rapaport News
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