Lab Notes Gems & Gemology, Volume 46, No. 1

Spring 2010 G&G Lab Notes

Coated and Fracture-Filled Orangy Red Diamond
Diamond with Rare Green Fluorescence
Identification of Irradiated Black Diamonds
Large HPHT-Treated Type IIb Blue Diamond
Pink Diamonds Colored by Multiple Treatment Processes
Type IIa Greenish Yellow Diamond Colored by IR-Inactive Nitrogen
Red CVD Synthetic Diamond with Multiple Treatments
Exceptionally Transparent Treated Jadeite
Large Pair of Natural Freshwater Pearls
Blockage-Induced Growth Tubes in Tourmaline
Treated Green Turquoise
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