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Chinese Grading Lab 150 120617
Lab Spots Stone with CVD Coating
A Chinese gemological laboratory has identified a well-concealed synthetic-diamond coating that bolstered the size of a small natural stone.
News Dec 07, 2017 Rapaport News
Pink GIA diamond CVD H4 defect
GIA Finds Baffling Flaw in CVD Diamond
The Gemological Institute of America (GIA) doesn’t usually declare itself stumped, but a recent discovery of a flaw in a synthetic
News Jul 02, 2017 Joshua Freedman
GIA hybrid diamond
GIA Spots Natural Diamond with CVD Blue Layer
The Gemological Institute of America (GIA) has found a natural diamond with a synthetic coating that tints it blue
News May 04, 2017 Rapaport News
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