Lab Notes Gems & Gemology, Winter 1982, Volume 18, No. 4

Winter 1982 G&G Lab Notes

"Chameleon" Diamond
Crusader Diamond
Diamond Oddities
Unusual Absorption Spectrum in Diamond
Plugged Natural Blister Pearls
Star Quartz
Heat Treated Sapphire
Spinel and Sapphire, Colored by Cobalt
Star Spinel
Unclassified Oddities
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