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FANCY COLOR DIAMOND
Dazzling brilliance. Captivating color. The planet’s most valued gems are fancy color diamonds.
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Research
Characterization and Grading of Natural-Color Pink Diamonds
Known for their great beauty and rarity, pink diamonds have long been sought after by jewelers, collectors, and consumers.
An Important Exhibition of Seven Rare Gem Diamonds
The stories behind seven strikingly beautiful rare natural diamonds, united in an exhibit at the Smithsonian, are told here.
Summer 2009 G&G Lab Notes
Spring 2024 Auction Highlights
“Hummingbird” in Orangy Yellow Diamond
International Jewelry Tokyo 2024
CVD-Grown Diamond with Unusual Cause of Greenish Color
Fancy Vivid Yellow HPHT-Grown Diamonds
Detection of Treatment in Two Unusual Green Diamonds
Natural-Color Purple Diamonds from Siberia
Twelve natural-color purple diamond crystals from Siberia were studied using spectroscopic methods to better understand their color and its causes.
