A report on the first-ever Turquoise United conference in Albuquerque, New Mexico.

An examination of a beaded bracelet reveals calcite powder to enhance the imitation of natural root amber.

Rose channels and twinning planes are observed in light purplish blue synthetic corundum.

The Perot Museum of Nature and Science promotes public interest in mineral studies with The Year of Mineralogy exhibit.

A field gemology team from GIA provides an update on the ruby mining operations around Montepuez.

Examines the current available means of determining the geographic origin of gem-quality diamond, which are based largely on trace element and isotopic characteristics. For now, no method exists for determining the provenance of a random individual diamond.

Examines the variety of fluid inclusions contained within diamond, which reflect the natural processes that created and modified these gems deep within the earth’s mantle.

A comprehensive look at the gemological features and advanced analysis of blue and fancy-color sapphire from the agricultural area of Muling, China.

A breyite inclusion suggests the sublithospheric origin of a diamond examined in GIA’s New York laboratory.

Review of Pegmatites and Their Gem Minerals, by Michael Menzies and Jeffrey Scovil.

Focus on supporting ambitious goals, developing education content

An overview of the Fall 2022 Gems & Gemology content.

Forging a significant new collaboration

Resources, training available now

The largest in-person career fair in the gem and jewelry industry

GIA, the leader in gemological research, education and science-based gem identification and grading services, is expanding its gem origin services to provide retailers and consumers with the diamond source information they demand.

This installment of “Colored Stones Unearthed” explores inclusions in gems—how they form, how they are studied, and what they mean for gemologists and geoscientists.

Reports on diamonds from Guyana’s alluvial deposits, including mining history and practices.