Lab Notes Gems & Gemology, Volume 45, No. 2

Summer 2009 G&G Lab Notes

Bicolored Diamond
“Black” Diamond with Deep Violet Color
Carved Diamond Crucifix
Rare Type IIb Gray-Green Diamond
Unconventional Diamond Cuts
Pink CVD Synthetic Diamond
Rare Star Peridot
Tourmaline with Silver and Gold Chatoyancy
Eljen Treated Turquoise
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'Black' Diamond with Deep Violet Color - Supplementary Figure 
Submitted by Christopher M. Breeding and Kimberly M. Rockwell
Summer, 2009
UV-Visible–Near Infrared Spectrum
Submitted by Paul Johnson and Jason Darley
Summer, 2009