Lab Notes Gems & Gemology, Summer 1989, Volume 25, No. 2

Summer 1989 G&G Lab Notes

Phenomenal Chrysoberyl
"Coated" Diamond
Diamond Cube with Cloud-Like Inclusion
Fancy Intense Yellow Diamond with a Green Irradiation Stain
Irradiated Diamond Rough
Emerald with Plastic-Like Filling
Imitation Lapis Lazuli
X-ray Transparency Separates Two Lapis Lazuli Imitations
Cherrystone Clam "Pearl"
Natural Color Ruby
An Unusual Zircon
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