Spring 2010

Lab Notes

DIAMOND
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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