Lab Notes Gems & Gemology, Summer 1981, Volume 17, No. 2

Summer 1981 G&G Lab Notes

Colored Diamond Anomalies
Olivine in Diamond
A New Source of Synthetic Emeralds?
"Manufactured" Emerald Specimens
Jade Substitute
Dyed and Wax-Treated Lapis Lazuli
Porous Opal
Cultured Blister Pearls
Damaged Natural Pearls
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