Summer 1982 G&G Lab Notes
Diamond
Emerald Fakes
Grossularite Garnet
Dangers of Heating Jadeite during Jewelry Repair
Kornerupine with Apatite Inclusions
Flow Structure in Opal
Oolitic Opal
Opal Doublet
Mysterious Pearls in Shells
Unusual Natural Pearl
Synthetic Star Ruby
Dangers of Heating Sapphires during Jewelry Repair
Natural Sapphire with Heat-Induced Star
Treated Synthetic Sapphire
Inclusions in Spinel
Cat's-Eye Tourmaline
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