Research Article Search Results

Offers a comprehensive look at a variety of augite from Dong Nai, Vietnam, detailing its formation and gemological characteristics.

Investigates the mineral and chemical compositions and surface morphology characteristics of brown mammoth ivory to identify the origins of its brown color.

Gemstones formed in metamorphic environments offer insights into the earth’s history and the evolution of tectonic activity that led to their formation.

After a slow start, the spring 2023 auction season ends with multiple broken records.

Examination of a gem-quality aquamarine crystal reveals an inclusion cluster presumed to be columbite.

A partially exposed orange garnet inclusion with surrounding fractures resembles a flying insect in a brownish yellow diamond.

A rare example of pink pyrope garnet is examined in the Carlsbad laboratory.

Four atypical bead cultured pearls with variations on two types of nuclei are examined in the Mumbai laboratory.

A trip to a rural Liberian diamond mining community results in a newly discovered source of corundum.

Handcrafted jewelry pieces featuring tanzanite carvings stood out at the GJX show.

A graduate of GIA’s Jewelry Design program in London is the recipient of the 2022 Gianmaria Buccellati Foundation Award.

A look at Virtu Gem, a company dedicated to improving artisanal mining practices in Africa.