Lab Notes Gems & Gemology, Volume 45, No. 1

Spring 2009 G&G Lab Notes

Cubic Zirconia Reportedly Coated with Nanocrystalline Synthetic Diamond
Diamond with Assemblages of K-Feldspar, Hematite-Magnetite, and Quartz in Etch Channels
Clarity Grading Radiation Stains in Diamond
Rare Mixed Type (Ia/IIb) Diamond with Nitrogen and Boron Centers
Purplish Pink Spinel from Tajikistan—Before and After Cutting
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