CARLSBAD, Calif. – Monday, Feb. 14 – The fifth annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design was presented on Feb. 4 to GIA graduate Meghan Simmons from the GIA Carlsbad campus.

Remarkable “horsetail” inclusions discovered in a demantoid garnet, while their origin and composition remain under discussion.

The Tokyo lab recently identified a unique localized distribution of cloud-like inclusions in a chrysoberyl.

Nacreous pearls are known to have platelet growth resembling fingerprints or topographic maps, but a less common appearance is nacre with a concentric spiral pattern.

Analysis of a transparent yellow angular crystal inclusion in a Brazilian rock crystal quartz host suggests monazite.

A reported new source of blue zircon in Malawi yields rough material for beautiful finished stones in the gem trade.

Examines the mining and the internal, spectroscopic, and chemical features of peridot from this deposit, which possesses a rich olive green color and is available in large sizes.

A gemological analysis of blue Burmese sapphires from Mogok, based on a series of field expeditions over the last decade.

One of the more subtle inclusion scenes gemologists sometimes observe in natural diamonds is the presence of crystallographically oriented structural defects known as “internal graining.”

Contributes to the mining history of Austria’s Habachtal region, which is believed to be one of the earliest emerald deposits.

The Carlsbad lab received a rhodochrosite cabochon featuring rhomboid-shaped fluid inclusions, causing a four-rayed star.

Unique diamond- and emerald-lensed spectacles from the Mughal Empire were tested in GIA’s New York laboratory.

The first installment of this column discusses the formation of colored stones from the crust-mantle transition and below.

Researchers examine six specimens of banded turquoise, obtained through long-term cooperation of local miners in Zhushan County.

GIA’s New York laboratory reports a new record size for CVD laboratory-grown diamond.

CARLSBAD, Calif. – Dec. 2, 2021 – The joy diamonds bring to people’s lives and the confidence inspired by a diamond grading report from the experts at GIA are at the center of GIA’s first new global consumer marketing campaign in more than a decade.

CARLSBAD, Calif. – Nov. 17, 2021 – The GIA Board of Governors held their first in-person meeting in two years, Nov. 5 – 8, in Carlsbad, California.