Research & News
The Rare Sun Diamond
An eye-visible cloud with a star-like pattern is highlighted by the cut of the Rare Sun diamond.
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.
Tourmaline Inclusion in Russian Alexandrite
Russian alexandrite hosts well-formed prismatic tourmaline inclusions, a rare combination worthy of a collector’s specimen.
Faceted Diamond Stellate Cloud Inclusion
A remarkable inclusion scene in diamond is showcased by an unconventional cutting style.
Iolite-Sunstone Intergrowth and Inclusions
A unique cabochon specimen composed of “bloodshot” iolite and sunstone offers a visually pleasing combination.
A rare faceted vlasovite is encountered for the first time at the Carlsbad laboratory.