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Expedition to the Cruzeiro Tourmaline Mine in Minas Gerais, Brazil

Journey with us to Brazil for a visit to one of the world’s most prolific tourmaline mines. You’ll also hear a highly captivating story of family success through perseverance.

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From Brazil to China: The Journey of Rubellite Tourmaline

After documenting tourmaline production at the famous Cruzeiro mine in Brazil, GIA takes you to China, where you can witness the cutting of these stones for entry into the hottest tourmaline market in the world.

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Sawing bangle blanks from jadeite slabs
Article
Jadeite Manufacturing and Trading Hubs in Guangdong, China

Join a GIA team on a visit to the bustling jadeite trading centers of Guangdong Province, China. You'll observe a market understood by few Westerners, as industry leaders explain the intricate details of a gemstone that's also an integral part of the culture.

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Baltic Amber map
Article
Historical Reading List: Baltic Amber

Amber has been found in various parts of the world, but the main historical source is the land that surrounds the Baltic Sea.

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Santa Terezinha De Goias Emeralds
The Santa Terezinha De Goias Emerald Deposit

Brazil has become a leading producer of emeralds; this article examines one of the most significant deposits.

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Gem miner with Burmese gems from Mogok
General Gemology and Jewelry

Abstracts of speaker presentations from the “General Gemology and Jewelry” session of GIA’s 2018 International Gemological Symposium.

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Jaipur, India: The Global Gem and Jewelry Power of the Pink City

Examines Jaipur’s role as a colored stone cutting and jewelry manufacturing center, with profiles of 17 companies and their factory, trading, and retail operations.

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Mining site at Zahamena National Park, Madagascar
The Color of Responsibility: Ethical Issues and Solutions in Colored Gemstones

Examines the challenges of ethical sourcing and production of colored stones, and what some industry leaders are doing to address the situation.

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Fabergé figures of Chamber Cossacks A.A. Kudinov and N.N. Pustynnikov
Fabergé Cossack Figures Created from Russian Gemstones

Hardstone figures of two Russian imperial bodyguards, commissioned in 1912 by Nicholas II, demonstrate the House of Fabergé’s meticulous detail and craftsmanship.

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High-purity gold items
Characterization of Tarnish Spots in Chinese High-Purity Gold Jewelry

Examines the origin and nature of tarnish spots in high-purity gold and how they can be avoided.

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