GIA Research

GIA is proud to provide the most comprehensive research in the industry with a world-renowned field gemology team and a dedication to acquiring colored stones directly from the source.

Our cutting-edge research lays a strong scientific foundation to set the standard for diamond and gemstone reports. It also allows GIA to develop innovative instruments and educate future gemologists and industry leaders. Most importantly, our research helps us protect consumers across the globe. Learn more about what we do.

Research Content

An array of rough and polished colored gemstones sitting on a world map.

Publications


GIA lab scientists offer up their findings on some of the world’s most valued gems and their treatments.

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GIA Research

Publications

From the history of the Chivor emerald mine to the ancient craft of jade carving to insight into the causes of corundum color, these articles combine science with art and history to provide insight into the fascinating and complex world of gemstones. Offering up the best and most current research by GIA lab scientists, all were published in GIA’s peer-reviewed academic journal,Gems & Gemology, or other professional journals. View theResearch Publication Archive.

Explore GIA Publications

An array of rough and polished colored gemstones sitting on a world map.

Read about the some of the world’s most valued gems and the identification of unusual gem treatments and rare gem materials.

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Hands holding rough tsavorite in the field

Field Gemology


GIA field gemologists travel around the world to study new gem sources and collect research samples.

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GIA Research

Field Gemology

GIA field gemologists are globetrotters, traveling to all corners of the world to study new gem sources, such as Colombian emerald or Mozambican ruby. In the past decade, they’ve been on 95 expeditions to 21 countries, collecting more than 1 million carats of samples. Collecting gems from known geographic localities is of tremendous importance to the GIA research program.  By collecting samples in the field, we have a much better understanding of where they come from, and the geologic conditions of formation of the gem deposit itself.  We can obtain samples of both the gem materials and the host rocks in which they occur, as well as photographs and video footage of the area. Once back at GIA, these gem samples can be studied using a wide variety of scientific techniques, and the resulting data can be added to our information database which supports the gem identification report services of the GIA Laboratory.

Explore Field Gemology Articles

Hands holding rough tsavorite in the field

Curious about artisanal mining, the conditions of gem formation or how gemologists determine gemstone country of origin?

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Researcher sitting at a desk operating a computer.

Collaborations & Support to Academia

Learn about how our researchers collaborate and share their findings with scientists at other institutes.

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GIA Research

Collaborations & Support to Academia

To support our commitment to gem knowledge, GIA researchers share their findings in professional publications and often collaborate with researchers at universities or other institutions to coauthor articles. These diverse articles represent pressing topics that our scientists are currently investigating, including knowledge that addresses current gemological challenges.

Explore Articles From GIA Researchers

Researcher sitting at a desk operating a computer.

Learn more about how our researchers collaborate and share their findings with scientists at other institutes.

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Research that transforms and inspires

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Recent Research

Figure 1. Suite of faceted nickel-diffused spinel (0.67–1.01 ct) showing a range of color from blue to bluish green. Photo by Aaron Palke and Diego Sanchez.

Color Modification of Spinel by Nickel Diffusion: A New Treatment

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404.2 ct type IIa rough diamond from the Lulo mine in Angola used to fashion a 163.4 ct emerald-cut diamond.

Methods and Challenges of Establishing the Geographic Origin of Diamonds

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Vietnamese pearl farm employee at Hạ Long Bay

Vietnam: Shell Nuclei, Pearl Hatcheries, and Pearl Farming

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