Summer 1983 G&G Lab Notes
Painted Pink Diamond: The Big Switch
Diamond Rose Cuts
Diamond Simulants
Treated Yellow Diamond
Synthetic Emerald
Dyed Blue Jadeite
Black and White Opal
Black Non-Nacreous Natural "Pearl"
Early Mabe Pearls
Green Quartz
Color Restoration of Sapphire
Taaffeite
Imitation Turquoise
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