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The New & Improved Laboratory-Grown Diamond Report – Dossier Now at a lower cost LEARN MORE Scholarships for Gemology & Jewelry Arts Courses Apply April 15 - May 15 Learn more Emerald: "Nothing Greens Greener" May Birthstone LEARN MORE Heat Treatment of Burmese Ruby, Copper-Diffused Red Feldspar, and Porcelain-Treated Turquoise New Gems & Gemology Issue READ MORE

Low Temperature Heat Treatment of Burmese Ruby

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