featured Research & News


Melee Diamond Parcel Containing Nearly One-Third CVD Synthetics

GIA Melee Analysis Service reports a significant number of CVD synthetic diamonds in a parcel.
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Featured Article

Diamond Producers Aim for Lower Qualities in Today’s Market

The average value of rough diamonds mined last year took a sharp drop, while demand has trended toward smaller stones and lower qualities.
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Kyanite: A Rare Blue Guest in Diamond

An unexpected crystal within a diamond helps to identify the gemstone’s geologic origin.
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“Sango Pearl” from Japan

A study of a pink Japanese akoya cultured pearl yields information about the material’s color origin.
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Hurricanes Harvey, Irma May Wreak Havoc on Luxury Sales, Too

The devastating damage of Hurricanes Harvey in Texas and Irma in Florida will likely take a toll on luxury sales.
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