Lab NotesGems & Gemology, Winter 1987, Volume 23, No. 4

Winter 1987 G&G Lab Notes

Faceted Amber Imitation Amber Calcium Carbonate Beads Corundum Doublets Synthetic Emerald Imitation Jade Cultured Black Pearl Large Cultured Pearl An Oyster "Pearl" Heat-Treated Natural and Synthetic Ruby To view the full section, download the PDF above.

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Winter 1987 Lab Notes | Gems & Gemology