Lab Notes Gems & Gemology, Fall 2003, Volume 39, No. 3

Fall 2003 G&G Lab Notes


Dyed Black Chalcedony
Some Unusual Type II Diamonds
A Faceted Leadhillite
Cultured Pearl Mystery
Treated-Color “Golden” South Sea Cultured Pearl
Quartz Crystal with “Lizard” Inclusion
Unusual Mottled Pink Quartz
Quartzite Dyed to Imitate Ruby
Unusual Inclusions in a Beryllium-Diffused Sapphire
Stichtite Flowers
Addendum: Cat’s-Eye Opal
 
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