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Gems and Gemology LPHT CVD pink 150
Pink Synthetic Displays Rare Treatment
A pink diamond recently submitted to the Central Gem Laboratory (CGL) in Tokyo was found to be a chemical vapor deposition
News Dec 17, 2018 Rapaport News
LMHC padparadscha
Gem Group Clarifies Sapphire Color Requirement
Stones must have a stable color to qualify as padparadscha sapphires, according to a ruling by the Laboratory Manual Harmonisation Committee
News Dec 11, 2018 Rapaport News
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