An updated edition of Herbert Tillander’s book is now available.

GIA’s president and CEO Susan Jacques is honored with the Richard T. Liddicoat Award for Distinguished Achievement.

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.

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.

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.

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

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

An aquamarine crystal from Pakistan contains a pseudomorphic quartz inclusion.

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.

GIA 将于 2026 年 1 月 1 日推出最新设计的彩色宝石鉴定报告和新的服务。

GIA 将于 2026 年 1 月 1 日推出最新设计的彩色宝石鉴定报告和新的服务。

An overview of the Fall 2025 Gems & Gemology content.

Summarizes the features of 480 nm band diamonds, including chameleon diamonds and those with unmodified orange hues, for rapid identification or advanced gemological testing.