Research Article Search Results

Showcases the diverse natural shapes of rough diamonds and explores how geological processes create their unique forms.

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

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

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

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

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

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

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

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

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

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.

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.