Lab NotesGems & Gemology, Winter 1989, Volume 25, No. 4

Winter 1989 G&G Lab Notes

Plastic Imitation Amber Diamond with an Almandine-Pyrope Garnet Inclusion Bicolored Diamond Diamond with a Color-Change Garnet Inclusion Radium Treated Diamond Treated Diamond Crystal Impregnated Jadeite Jade Assembled Pearl Treated Black Cultured Pearl Damaged "Burma" Ruby Large Purple Scapolite Blue Tourmaline from Brazil Imitation Cubic Zirconia To view the full section, download the PDF above.

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