The date and topic of the 2026 Sinkankas Symposium is announced.

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

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

Microscopic examination reveals intriguing growth tubes in a copper-bearing tourmaline.

A perfectly shaped euhedral tourmaline crystal is identified in a faceted tourmaline.

The blunt termination of a red manganotantalite inclusion displays a striking contrast against a greenish blue sapphire.

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.