Carbon Dioxide in a Brown Diamond

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Treated HPHT Laboratory-Grown Diamond with Dramatic Color Zoning

A Fancy Deep brownish orange treated HPHT-grown diamond exhibits multiple defect concentrations in various growth sectors.

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A Remarkable 16.71 ct Transparent Orange-Yellow Sodalite

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Rare Natural Bicolor Diamond

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Two Foraminifera-Like Objects Found in a Natural Saltwater Pearl

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