Research Article Search Results

Abalone pearls submitted to the New York lab provide insight into the range of colors and shapes this type of mollusk can produce.

A colorless diamond crystal fragment shows an eye-visible bluish green internal induced radiation stain that developed in a near-surface environment.

Explores the history, geology, and current production of this unique source of large diamonds.

Proposes a model for trapiche emerald formation based on petrographic, spectroscopic, and chemical examination.

Colombia’s unique trapiche emeralds exert a fascination for many gemologists.

Visit gem mining areas in Madagascar, Kenya, Tanzania, Zambia and Mozambique with GIA’s field gemologists.

G&G Brief presents an overview of the content of the Fall 2015 issue of Gems & Gemology.

Venture deep underground with GIA’s Field Gemologists Vincent Pardieu and Dr. Aaron Palke as they explore the geology of Mogok’s ruby, sapphire, and spinel deposits.

See eastern Thailand’s resurgent mining operations and gem markets along with GIA’s field gemologists.

Go onsite to Zambia’s emerald mines with GIA’s field gemology team.

Climb Luc Yen’s treacherous limestone mountains in search of the region’s ruby, sapphire, and spinel.

Visit Malawi’s Chimwadzulu ruby mine with GIA Field Gemologist Vincent Pardieu.