Lab NotesGems & 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 To view the full section, download the PDF above.

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