Fall 2014 - Volume 50, Issue 3
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0.34 ct CVD synthetic
CVD Synthetic Diamond with Unusual Inclusions

Examination of a CVD synthetic diamond with an unusual pattern of growth dislocations that resemble natural inclusions.

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Natural Mixed Cape Diamond
Mixed-Type Cape Diamond

A Fancy orangy yellow “cape” diamond featured an unexpected 480 nm band, a defect normally associated with orange color.

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Non-nacreous Pearls
Natural Pearls Reportedly from a Spondylus Species (“Thorny” Oyster)

A rare look at natural pearls from a known Spondylus species, commonly called “thorny” oysters.

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1.50 ct Fancy Dark gray CVD synthetic diamond
Two Fancy Dark Gray CVD Synthetic Diamonds

Examination of two CVD synthetic diamonds with an unusual Fancy Dark gray color.

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73.69-mm-long Synthetic Ruby Crystal
Flame-Fusion Synthetic Ruby Boule with Flux Synthetic Ruby Overgrowth

This synthetic ruby specimen features two growth methods within the same crystal.

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Irradiated CVD Synthetic Diamond
Heavily Irradiated CVD Synthetic Diamond

A look at the first CVD synthetic diamond examined at GIA that has been irradiated to a blue color.

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Fancy-Colored Diamonds
Diamond, Artificially Irradiated and Coated Brown

Examination of a diamond with a rare and highly sought-after Fancy reddish brown color revealed that it had been irradiated and coated.

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Yellow Diamond
Xenotime Inclusion in Yellow Diamond

Presents what is believed to be the first report of a xenotime inclusion in gem-quality diamond.

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