Winter 1991 G&G Lab Notes
Treated-Color Diamond with Natural Radiation Stains
Massive Grossularite Garnet Carving
Heat-Damaged Jadeite
Banded Lapis Lazuli
Unusually Large Worked and Plugged Cultured Pearl
Quartzite and Dolomite Bead
Coated Sapphire
Twinned Synthetic Sapphires
To view the full section, download the PDF above.
