Focus on supporting ambitious goals, developing education content

An overview of the Fall 2022 Gems & Gemology content.

Forging a significant new collaboration

Resources, training available now

The largest in-person career fair in the gem and jewelry industry

GIA, the leader in gemological research, education and science-based gem identification and grading services, is expanding its gem origin services to provide retailers and consumers with the diamond source information they demand.

Numerous etch channels are observed in a 5.19 ct type IIa natural diamond.

A unique jade cabochon with vivid green bodycolor and pronounced chatoyancy is examined at a lab in Shanghai.

The historic discovery of a Maine tourmaline source is celebrated through jewelry designs featuring gems unearthed 50 years ago.

Two impressive diamonds from Arkansas and Colorado are featured in the Great American Diamonds exhibit at the Smithsonian’s National Museum of Natural History.

An overview of the Summer 2022 Gems & Gemology content.

The first report of a topaz inclusion in rare red beryl from Utah.

An extremely convincing imitation of emerald is examined in Beijing.

A lab in Bangkok shares study on color stability in yellow sapphire.

Photochromic zircon shows significant color change from medium light greenish blue to very dark yellowish green.

A unique twinned crystal inclusion resembles a boomerang in a rough topaz.

A fascinating diamond crystal inclusion displaying a transparent, ghost-like appearance is identified in a Faint green diamond.

GIA’s New York laboratory reports on a 15.10 ct Fancy Vivid blue cut-cornered rectangular step cut named the De Beers Cullinan Blue diamond.

Discusses the unusual surface characteristics of ekanite from secondary deposits in Sri Lanka.

Uses gamma-ray spectrometry to directly measure internal radioactivity in green nephrite from deposits in Poland, Russia, Canada, and New Zealand.