Research Collaborations & Support to Academia

Since GIA’s founding in 1931, our mission has been to protect the public trust in gems and jewelry. Part of fulfilling this mission means conducting extensive research on gems through acquiring gem samples and conducting thorough scientific investigation on these samples through cutting-edge instruments. Our goal is to share our findings widely, including with the jewelry trade, scientific and academic communities and the general public.

The following list showcases recent articles authored or coauthored by GIA scientists that have appeared in professional publications. Coauthored articles were written in collaboration with researchers at universities or other institutions. These diverse articles represent pressing topics that our scientists are currently investigating, including knowledge that addresses current gemological challenges.

All Gems & Gemology articles are available for download on the GIA website. Articles from other journals are often available in university libraries or from the journal publishers. At GIA, we are privileged to have access to a large range and quantity of gems often unavailable to other scientists. We are thrilled to be able to share the insight obtained from these gems with fellow scientists and the public at large.

AJDC Jewelry Collection

The GIA Museum showcases contemporary jewelry pieces donated by the American Jewelry Design Council.

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Hanabi in a Conch Pearl

A pink oval conch pearl displays firework-like flame patterns.

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Characterization of Emeralds from Zhen’an County in Shaanxi, China

Presents a comprehensive analysis of the gemological, spectroscopic, and trace element characteristics of a set of Shaanxi emerald samples based on standard and advanced gemological methods.

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The Primary Sapphire Occurrence at French Bar Sill Along the Missouri River, Near Helena, Montana

Reports on a new source of primary gem-quality sapphire from Montana, comparing its inclusions and trace element chemistry with those from secondary sources in the state.

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Diamond Ring Prize from an Arcade-Style Claw Game

A diamond ring from a claw game in Japan is analyzed.

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Low-Temperature Heat Treatment of Corundum and the Behavior of the 3161 cm–1 Infrared Band

A study analyzing the thermal behavior of the 3161 cm–1 IR feature in 10 natural corundum samples from various deposits.

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Filled Natural Hollow Heart-Shaped Pearls

Examination of four heart-shaped pearls reveals cavity filling and plugging to improve durability.

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Type IIa/IaB Diamond Showing Transient Type IIb Responses

A 2.50 ct natural type IIa/IaB diamond submitted to the Dubai laboratory shifts to type IIb after deep-UV excitation.

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Low-Heft Hollow Natural Pearl with an Opening

Organic-rich material is observed through an opening in a hollow natural pearl.

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Extraordinary Large Bicolor Natural Rough Diamond

A 37.41 ct natural rough diamond with distinct pink and colorless zones is examined at GIA’s Botswana laboratory.

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Quench-Crackled and Dyed Laboratory-Grown Sapphire

The Carlsbad lab receives a laboratory-grown colorless sapphire with weblike fractures containing concentrations of dye.

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Two Assembled Pearls

Natural pearl cores are used to simulate the appearance of natural pearl growth in two assembled pearls mounted in a pair of earrings.

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