Lab Notes Gems & Gemology, Winter 1991, Volume 27, No. 4

Winter 1991 G&G Lab Notes

A Large Chlorite Carving
Treated-Color Diamond with Natural Radiation Stains
Massive Grossularite Garnet Carving
Heat-Damaged Jadeite
Banded Lapis Lazuli
Unusually Large Worked and Plugged Cultured Pearl
Quartzite and Dolomite Bead
Coated Sapphire
Twinned Synthetic Sapphires

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