Lab Notes Gems & Gemology, Summer 1994, Volume 30, No. 3

Summer 1994 G&G Lab Notes

Diamond Laser Drill Holes or Natural Inclusions?
Diamond with Unusual Color Zoning
Trapiche Emerald from a New Locality
Jadeite with Metallic Inclusions
Round and Near-Round Freshwater Tissue-Nucleated Cultured Pearls
Glass-Coated Quartz
Synthetic Sapphire with a Small Star
Sapphires from Yogo Gulch, Montana
Dyed and Impregnated Turquoise
Faceted Vayrynenite
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