News & Articles

Recent Articles
Multi-colored gems are superimposed on an image of glacier peaks.

Frozen Splendour: Gems and Minerals Near the Arctic Region

Sharon Bohannon, March 17, 2017 Topics: Inclusions, Optical Properties, Physical properties

Circumnavigate the boreal reaches of the globe from Greenland, proceeding in an easterly direction to Canada to explore polar gems.

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Gem: The Definitive Visual Guide book cover

Book Review: Gem: The Definitive Visual Guide

Tao Hsu, March 10, 2017

A review of Gem: The Definitive Visual Guide.

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Blue Sapphires

An In-Depth Gemmological Study of Blue Sapphires from the Baw Mar Mine (Mogok, Myanmar)

Wasura Soonthorntantikul, Wim Vertriest, Victoria Liliane Raynaud-Flattot, Supharart Sangsawong, Ungkhana Atikarnsakul, Charuwan Khowpong, Vararut Weeramonkhonlert and Vincent Pardieu, February 24, 2017

GIA field gemmologists visited the Baw Mar operations in 2013, 2014 and 2015. In this study, we analysed samples collected during two separate expeditions.

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Sapphire

Sapphires from the Gem Rush Bemainty area, Ambatondrazaka (Madagascar)

Vincent Pardieu, Wim Vertriest, Vararut Weeramonkhonlert, Victoria Raynaud, Ungkhana Atikarnsakul and Rosey Perkins, February 24, 2017

The discovery of many fine quality sapphires in this area is opening a new chapter in the conflict between conservation and gem mining in north-eastern Madagascar.

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New Rings: 500+ Designs book cover

Book Review: New Rings: 500+ Designs

Sarah Froelich, February 22, 2017

Review of New Rings: 500+ Designs by Nicolas Estrada.

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A scattering of rough diamonds

De Beers Optimistic as Sales Revive; Luxury Houses Remain Cautious

Russell Shor, February 21, 2017 Topics: Design, Education

De Beers holds largest cycle (sight) in more than two years. Luxury sales have begun to rise again after a negative year.

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Tips From the Bench
Modify Your Prong Pushers to Make Them More Versatile

Compiled by GIA’s Jewellery Manufacturing Arts Instructors
 

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Library
The first point of reference for gems and jewellery

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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