Lab NotesGems & Gemology, Winter 2005, Volume 41, No. 4

Winter 2005 G&G; Lab Notes

Yellow Cubic Zirconia Imitating Cape Diamonds Orange Diamond Treated by Multiple Processes Pink Diamonds with a Temporary Color Change Unusually Large Novelty Cut Diamond Small Synthetic Diamonds Diaspore “Vein” in Sapphire Unusual Pearl from South America Unusually Small Natural-Color Black Cultured Pearls Identification of Turquoise with Diffuse Reflectance Infrared Spectroscopy To view the full section, download the PDF above.

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