After a slow start, the spring 2023 auction season ends with multiple broken records.

GIA president and CEO Susan Jacques receives the American Gem Society’s highest honor.

An intriguing metallic inclusion is observed in a faceted garnet.

The Nineteenth Annual Sinkankas symposium, held at GIA’s Carlsbad, California campus, focused on gems and minerals of San Diego County.

Microscopic observation unveils the first known instance of skeletal metallic inclusions in Brazilian Paraíba tourmaline.

Pinkish orange crystal inclusions in a faceted quartz are identified as the rare phosphate mineral triplite.

Isolated nitrogen confined to the outer surface of a 0.98 ct diamond causes “yellow skin.”

Fiber-optic light creates a night sky scene in a yellow sapphire from Madagascar.

Unusual natural pink diamonds displaying faint yellow color zoning and strong yellow fluorescence are studied in the Carlsbad laboratory.