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A large pear shaped yellow diamond hangs from a black cord and lies against red material.
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US Holiday Season Opens Well, Despite Volatile Markets

The U.S. holiday shopping season is looking positive, despite signs that an economic slowdown may be coming in 2019. Plus, more auction sales records.

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Sapphires from Bingham Canyon (Utah) and Yogo Gulch
Gem Localities and Formation

Poster abstracts on “Gem Localities and Formation” from GIA’s 2018 International Gemological Symposium.

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Victorian Whitby jet
General Gemology and Jewelry

Poster abstracts on “General Gemology and Jewelry” from GIA’s 2018 International Gemological Symposium.

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Bicolor topaz with white fluorite inclusions from Ukraine
Gem Localities and Formation

Abstracts of speaker presentations from the “Gem Localities and Formation” session of GIA’s 2018 International Gemological Symposium.

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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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Colombian independent miners
Colombian Emerald Industry: Winds of Change

A firsthand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.

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Rough sapphires from Chila, Ethiopia.
Sapphires from Northern Ethiopia

A new source of sapphires is found in the Tigray region of Ethiopia.

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Brazilian Diamonds: A Historical and Recent Perspective

Recounts the history, geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production.

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Ruby-bearing gravel bed in Mugloto.
Update on Gemstone Mining in Northern Mozambique

Recounts an expedition to Mozambique’s important deposits of ruby, spinel, and tourmaline, which have yet to be fully explored.

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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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