Research & News

Recent Articles

Books: Smithsonian Nature Guide on Gems

Author: Michael T. Evans , Apr 17

A review of Smithsonian Nature Guide on Gems.

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Open-air Mogok Market

Mogok Series, Part 2:
The Expedition, the Mines, and the People

Author: Andrew Lucas and Vincent Pardieu , Apr 11

An expedition to Mogok, Myanmar, documenting the current state of their ruby mining, markets, and cutting industries. This exotic land, known as the "Valley of Rubies," is one of the world’s most famous gemstone sources.

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Gem Identification Made Easy

Books: Gem Identification Made Easy

Author: Nathan Renfro , Apr 10

A review of the fifth edition of Antoinette Matlins's popular reference.

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Gemstones of the World

Books: Gemstones of the World

Author: Tara Allen , Apr 3

A brief look at the fifth edition of this well-known reference guide.

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Isotope Analysis of a Diamond

Carbon Isotope Studies Reveal Diamond Growth History

Author: Duncan Pay, Jim Shigley, Pedro Padua , Mar 26

Isotope studies at the Carnegie Institution reveal sources of carbon in diamond, plus answers to other fundamental questions.

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Tips From the Bench
Use Vector Tightening to Overcome Metal Memory in Prongs

Compiled by GIA’s Jewelry Manufacturing Arts Instructors

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The First Point of Reference for Gems and Jewelry

Located on GIA's Carlsbad campus, The Richard T. Liddicoat Gemological Library and Information Center is the largest, most complete library of its kind.

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