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Crimson Prince Ruby from Namya

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The Pearl in the Chicken: Pearl Recipes in Papyrus Holmiensis

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The Gemological Properties of the Sumitomo Gem-Quality Synthetic Yellow Diamonds

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The Gemological Properties of the De Beers Gem-Quality Synthetic Diamonds

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The Gemological Properties of Russian Gem-Quality Synthetic Yellow Diamonds

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Gem Localities of the 1990s

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Chrysoprase and Prase Opal from Haneti, Central Tanzania

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Cutting Diffraction Gratings to Improve Dispersion (“Fire”) in Diamonds

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