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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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Unusual Yellow Diamond with a Complex Growth History
A combination of growth and dissolution features contribute to a yellow diamond’s unique shape.
Starburst Cloud Inclusions in Diamond
Clusters of micro-inclusions form starburst-patterned clouds in a 2.50 ct Faint yellow-green round brilliant diamond.
Pink Diamond with Mottled Appearance
Examination of a Fancy Deep brownish orangy pink diamond reveals evidence of treatment to enhance its color.
“UFO” in Diamond
A diamond feather and its reflection resemble an unidentified flying object.
Extraordinary Large Bicolor Natural Rough Diamond
A 37.41 ct natural rough diamond with distinct pink and colorless zones is examined at GIA’s Botswana laboratory.
A Guide to Diamonds with the 480 nm Absorption Band
Summarizes the features of 480 nm band diamonds, including chameleon diamonds and those with unmodified orange hues, for rapid identification or advanced gemological testing.
CVD-Grown Diamond with Unusual Cause of Greenish Color
A previously unidentified cause of green color in CVD-grown diamonds is detected for the first time in a diamond submitted to the Carlsbad laboratory.
Fancy Vivid Yellow HPHT-Grown Diamonds
A report on a submission of 26 yellow HPHT-grown diamonds from the Hong Kong laboratory.
“Hummingbird” in Orangy Yellow Diamond
An omphacite inclusion surrounded by fractures in an orangy yellow diamond takes the shape of a hummingbird.
A Study of the Winston Red: The Smithsonian’s New Fancy Red Diamond
Presents the first scientific and historical study conducted on the 2.33 ct Winston Red, the fifth-largest known Fancy red diamond in existence.
Master Diamond Cutter Harvey Lieberman
A look at Harvey Liberman’s career as a renowned diamond cutter in New York’s Diamond District.
Irradiated HPHT-Grown Diamonds with Blue-Green Color Zonation
The Carlsbad laboratory reports on two HPHT-grown diamonds with interesting sector-dependent color zonation.
