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Four trapiche-like amethyst cabochons.
Trapiche-like Amethyst from Brazil

Four amethyst cabochons are unique due to inclusions that create a trapiche-like appearance.

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Cabochons of strongly zoned Brazilian quartz.
Multi-Color-Zoned Quartz from Brazil

A Brazilian quartz with unusual color zoning caused by variable iron content is examined.

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Zambia’s Kagem emerald mine.
Conversation with Gemfields

An exclusive interview with Ian Harebottle, CEO of Gemfields.

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Amethyst crystals from Morocco
Moroccan Amethyst: Mining and Marketing

Insight into amethyst mining activity in Morocco.

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Article
GIA Gem Project
Various Gems (Olivine - Rutile)

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewelry Design and the Latest in Synthetics

G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.

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Spring 2002 Gem News International

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

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Moroccan amethyst crystals
Amethyst From Morocco: An Update

GIA’s Bangkok lab investigates the gemological properties of Moroccan amethyst.

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Article
Using LA-ICP-MS Analysis for the Separation of Natural and Synthetic Amethyst and Citrine

An exploratory investigation of the value of laser ablation–inductively coupled plasma–mass spectroscopy in identifying natural and synthetic quartz.

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Article
Insights From Inclusions

Natural gemstones are typically far more valuable than synthetic ones, so being able to identify them correctly is a powerful skill.

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