Lab Notes Gems & Gemology, Winter 1997, Volume 33, No. 4

Winter 1997 G&G Lab Notes

Unheated Aquamarine Carving
Treated Color Beryl
Diamond Acting as a Heat Sink
Fracture-Filled Pink Diamond
Mysteriously Fractured Diamonds
A Very Dark Pyrope-Almandite Garnet  
Synthetic Sapphire Sunglasses
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