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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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International Jewelry Tokyo 2024
Carbon Dioxide in a Brown Diamond
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.
Rare Natural Bicolor Diamond
Etch Features Reveal the Morphology of Diamond
Trigons and tetragons observed in a chameleon diamond indicate both octahedral and cubic growth.
An Iridescent “Insect Wing” in Diamond
A feather inclusion with iridescence caused by thin-film interference in diamond resembles an insect wing.
Yellow Zoning in Pink Diamonds
Unusual natural pink diamonds displaying faint yellow color zoning and strong yellow fluorescence are studied in the Carlsbad laboratory.
A “Flying Insect” in Diamond
A partially exposed orange garnet inclusion with surrounding fractures resembles a flying insect in a brownish yellow diamond.
A Closer Look at Internal Etch Channels in Diamond
The Carlsbad laboratory reports on a Fancy Deep brownish yellowish orange diamond featuring trigons within subsurface etch channels.
Omphacite in Pink Diamond
A bluish green omphacite crystal is discovered in a Fancy brown-pink diamond.
Fall 2022 Auction Highlights
A successful spring season set high expectations for colored diamonds at auction in late 2022.
Large Diamond Inclusion in Diamond
A fascinating diamond crystal inclusion displaying a transparent, ghost-like appearance is identified in a Faint green diamond.
