Winter 2005 G&G Lab Notes
Orange Diamond Treated by Multiple Processes
Pink Diamonds with a Temporary Color Change
Unusually Large Novelty Cut Diamond
Small Synthetic Diamonds
Diaspore “Vein” in Sapphire
Unusual Pearl from South America
Unusually Small Natural-Color Black Cultured Pearls
Identification of Turquoise with Diffuse Reflectance Infrared Spectroscopy
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