GIA offered a variety of hands-on sessions for attendees during the Converge conference.

An overview of more than 30 posters presented at the Converge conference.

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.

GIA’s Al Gilbertson receives the American Gem Society’s highest honor.

Investigates deposits known for producing multiple gemstone species and the conditions that create their distinct geological settings.

A report on the increase of artificially assembled or altered specimens circulating in Pakistan’s local gem markets.

GIA studies a selection of rough and cut garnet from a new source in northern Vietnam.

Multiple vivid blue lazurite inclusions are observed in a near-colorless scapolite.

A pink oval conch pearl displays firework-like flame patterns.

A pink spinel hosts a richly textured, opaque metallic inclusion.

Armenite is submitted for the first time to the Carlsbad laboratory.

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

Examines samples of Mona Lisa turquoise to identify their chemistry and structure, revealing copper as a major elemental component of the material.

Examination of four heart-shaped pearls reveals cavity filling and plugging to improve durability.

Colorful thin film inclusions are captured within a Russian emerald carving.

Dense tube inclusions in emerald create a scene reminiscent of a tranquil bamboo forest.

A semi-baroque saltwater nacreous pearl presents identification challenges in the Mumbai laboratory.

The Carlsbad laboratory reports on a rare submission of orangy red translucent friedelite.

The Mumbai laboratory reports on a jewelry submission containing fracture-filled diamonds.

A large faceted cuprite is examined at the Carlsbad laboratory.