CARLSBAD, Calif. – Sept. 5, 2019 – GIA released a software upgrade on Sept. 4 for the industry-leading GIA iD100® gem testing device, giving the instrument the ability to distinguish natural pink diamonds from laboratory-grown (HPHT and CVD) diamonds and diamond simulants.

George Rossman, a member of the GIA Board of Governors from 1995 to 2007 and professor of mineralogy, emeritus, at the California Institute of Technology (Caltech), passed away on February 6 at age 81.

GIA (Gemological Institute of America), together with the Gianmaria Buccellati Foundation, presented the ninth annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design on February 6, 2026, to GIA Carlsbad graduate Catherine “Cathy” Aulick.

During the GIA Board of Governors meeting in early November at the Institute’s headquarters in Carlsbad, CA, the Institute honored Susan M. Jacques with its highest honor, the Richard T. Liddicoat Award for Distinguished Achievement.

GIA will launch redesigned colored stones reports and new services on January 1, 2026.

Join us at HKTDC Hong Kong to explore the latest from GIA, including instrument demonstrations, tools to support your business, education, on-site laboratory services, colored stone grading services, and more. Plus, don’t miss our Immersive Pearl Experience Corner at GIA’s main booth at HKCEC!

Blue needle-like inclusions are analyzed in three quartz spheres.

Fungal inclusions are studied in two specimens of Burmese amber.

Immiscible two-phase fluid inclusions are investigated in a 0.48 ct Paraíba tourmaline.

A diamond ring from a claw game in Japan is analyzed.

A combination of growth and dissolution features contribute to a yellow diamond’s unique shape.

A study analyzing the thermal behavior of the 3161 cm^–1 IR feature in 10 natural corundum samples from various deposits.

A 63.17 ct dumortierite rough crystal is examined in the Bangkok laboratory.

The Carlsbad lab receives a laboratory-grown colorless sapphire with weblike fractures containing concentrations of dye.

Clusters of micro-inclusions form starburst-patterned clouds in a 2.50 ct Faint yellow-green round brilliant diamond.

Natural pearl cores are used to simulate the appearance of natural pearl growth in two assembled pearls mounted in a pair of earrings.

Investigates the morphological changes of macle diamonds during the growth process by exploring their three-dimensional internal zonal structure.

A precious cat’s-eye boulder opal from Australia is examined in the Carlsbad laboratory.

Presents a comprehensive analysis of the gemological, spectroscopic, and trace element characteristics of a set of Shaanxi emerald samples based on standard and advanced gemological methods.