Lab Notes Gems & Gemology, Fall 1982, Volume 18, No. 3

Fall 1982 G&G Lab Notes

Chalcedony, Repaired Cameo
Diamond Fake Crystal
Rare Inclusion in Diamond
Manufactured Emerald Specimens
Iolite, an Unusual Cat's-Eye
Jade Imitation
Lapis Lazuli Imitation
Pink Opal, a Rare Bird Indeed
Conch "Pearl"
Sapphire, Diffusion Colored
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