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Emerald
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.
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Tools
Research
The Geographic Origin Dilemma
An overview of the geographic origin complexities facing the gem and jewelry industry today.
Field Gemology: Building a Research Collection and Understanding the Development of Gem Deposits
With more than 90 field expeditions on six continents since 2008, GIA has accumulated over 22,000 colored stone reference samples. This extensive collection of colored stones with known origins supports GIA’s research on geographic origin determination.
Unique Vanadium-Rich Emerald from Malipo, China
Spectroscopic and chemical analyses of emeralds from this Chinese deposit show a unique composition.
Gemstones in the Era of the Taj Mahal and the Mughals
A look at the gem ornamentation of this landmark, as well as the jewels of the Mughal dynasty.
Land of Origins: A Gemological Expedition to Ethiopia
Documents a visit to the sapphire, opal, and emerald mining and trading areas of Ethiopia.
The Talisman of Charlemagne: New Historical and Gemological Discoveries
Reveals new details about this historical jewel and the results of its first gemological analysis.
Gilson Cat’s-Eye Synthetic Emerald
In the early 1960s, French ceramist and engineer Pierre Gilson succeeded in growing and producing flux synthetic emerald of commercially marketable quality.
Fortieth Anniversary of the Belmont Mine
Marcelo Ribeiro offers an update on mining and cutting activities at the Belmont emerald mine in Brazil.
Colombian Emerald Industry: The New Generation
Luis Gabriel Angarita and Edwin Molina share their experiences and perspective on the Colombian emerald industry.
Photoluminescence Spectra of Emeralds from Colombia, Afghanistan, and Zambia
Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
Colombian Emerald Industry: Winds of Change
A firsthand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.
