Lab NotesGems & Gemology, Winter 1981, Volume 17, No. 4

Winter 1981 G&G; Lab Notes

A Coral Substitute, Dyed Marble Angular Grooves on Diamond Burned Diamond "Chameleon" Diamond Green Diamonds Emerald Substitute, Dyed Beryl A Remarkable Three-Phase Inclusion in Emerald Natural Pearls Worn Out Pearl Simulant Dyed "Crackled" Quartz Star Quartz Heat-Treated Yellow-Orange Sapphires To view the full section, download the PDF above.

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