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Research & News
Gem News International
The Rare Sun Diamond
An eye-visible cloud with a star-like pattern is highlighted by the cut of the Rare Sun diamond.
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Feature Article
GIA Researchers Reveal the Secrets to Diamond-in-a-Diamond Mystery
GIA researchers in NY recently had the opportunity to examine one of the most interesting and unique diamond crystals ever found.
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Microworld
Tourmaline Inclusion in Russian Alexandrite
Russian alexandrite hosts well-formed prismatic tourmaline inclusions, a rare combination worthy of a collector’s specimen.
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Lab Notes
Faceted Diamond Stellate Cloud Inclusion
A remarkable inclusion scene in diamond is showcased by an unconventional cutting style.
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Microworld
Iolite-Sunstone Intergrowth and Inclusions
A unique cabochon specimen composed of “bloodshot” iolite and sunstone offers a visually pleasing combination.
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Lab Notes
Vlasovite
A rare faceted vlasovite is encountered for the first time at the Carlsbad laboratory.
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