◂ BACK TO GEM ENCYCLOPEDIA
FANCY COLOR DIAMOND
Dazzling brilliance. Captivating color. The planet’s most valued gems are fancy color diamonds.
See Gem As
Tools
Research
Fall 1986 G&G Lab Notes
An Economic Review of the Past Decade in Diamonds
Gray-To-Blue-To-Violet Hydrogen-Rich Diamonds from the Argyle Mine, Australia
Spring 1991 G&G Lab Notes
De Beers near Colorless-to-Blue Experimental Gem-Quality Synthetic Diamonds
Cleavage System in Pink Diamond
A Fancy Intense purplish pink diamond with a network of planar cracks and strain-induced bodycolor reveals an aesthetic geometric pattern.
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.
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.
Etch Features Reveal the Morphology of Diamond
Trigons and tetragons observed in a chameleon diamond indicate both octahedral and cubic growth.
The Type IIb De Beers Cullinan Blue Diamond
GIA’s New York laboratory reports on a 15.10 ct Fancy Vivid blue cut-cornered rectangular step cut named the De Beers Cullinan Blue diamond.
Yellow Zoning in Pink Diamonds
Unusual natural pink diamonds displaying faint yellow color zoning and strong yellow fluorescence are studied in the Carlsbad laboratory.
An Iridescent “Insect Wing” in Diamond
A feather inclusion with iridescence caused by thin-film interference in diamond resembles an insect wing.
