Lab Notes Gems & Gemology, Spring 2000, Volume 36, No. 1

Spring 2000 G&G Lab Notes

Chameleon Diamonds with Blue-to-Violet “Transmission” Luminescence
Evidence of another New Diamond Treatment
Light Blue Synthetic Diamond
Rare Gem Dumortierite
Massive Pink Hydrogrossular Garnet Carving
Black Cultured Pearls from Baja California, Mexico
Strand of Natural Coated Pearls
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