Spring 2011

Lab Notes

DIAMOND
Large HPHT-Treated Cape Diamond
A Very Large Colorless HPHT-Treated Diamond
Thermoluminescence from Type IaB Diamonds
Two Diamonds Cut to Exhibit Inclusions

HALITE Submitted for Identification

Three Similar-Appearing Green Stones: JADEITE, OMPHACITE, and HYDROGROSSULAR

Beryllium- and Tungsten-Bearing SAPPHIRES from Afghanistan

Aggregate of Black SYNTHETIC MOISSANITE and Crystalline SILICON

SYNTHETIC STAR SPINEL Imitation of Moonstone

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