Lab Notes Gems & Gemology, Gems & Gemology, Volume 28, Issue 1

Spring 1992 G&G Lab Notes

Calcareous Concretion from the Bailer Shell
Diamond with Aggregate Crystallization
Faceted Black Diamond Dice
Fire Damaged Diamond
Green Diamond with Natural Surface Color
Emerald Inclusions
Imitation Lapis Lazuli
Opal with Natural Cellular Structure
Unusual Polynesian Cultured Pearls
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