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Gemstones

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Chameleon diamond before and after heating
Chameleon Diamond with Nickel Absorption Band

A rare chameleon diamond is examined in GIA's Carlsbad lab.

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Fancy yellow 0.40 ct type Ib CVD-grown synthetic diamond
Yellow CVD Synthetic Diamond

A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.

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