A snuff bottle submitted to TULAB as jadeite jade is identified as a dolomite aggregate with fuchsite.

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

An undrilled black bead is identified as an assembled imitation pearl made from shell fragments.

Spiral patterns of nacre platelets observed on the surface of a non-bead cultured pearl are reminiscent of fingerprints.

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

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

Near-colorless heulandite crystals in an Ethiopian opal resemble the segmented bodies of worms.

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

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

A large faceted cuprite is examined at the Carlsbad laboratory.

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

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

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.

An overview of the Winter 2025 Gems & Gemology content.

An aquamarine crystal from Pakistan contains a pseudomorphic quartz inclusion.

A summary of presentations from 24 industry-leading experts at Converge.

Reports on a new source of primary gem-quality sapphire from Montana, comparing its inclusions and trace element chemistry with those from secondary sources in the state.

A photo tour of the GIA Museum’s latest exhibit featuring extraordinary crystals and gems central to the cultures of southern Asia.

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

An overview of the Winter 2025 Gems & Gemology content.