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Colombian independent miners
Colombian Emerald Industry: Winds of Change

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

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Jadeite boulder from Itoigawa, Japan
Japanese Jadeite: History, Characteristics and Comparison with Other Sources

Examines the sources, colour, texture and chemical composition of jadeite from Japanese deposits.

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chrysoberyl samples
Chrysoberyl from the New England Placer Deposits, New South Wales, Australia

Examines a collection of chrysoberyl samples from these sapphire placer deposits to determine their distinct mineralogical and chemical properties.

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Rough danburite crystals from Luc Yen, Vietnam
A New Find of Danburite in the Luc Yen Mining Area, Vietnam

Reports on a recently discovered eluvial deposit of honey yellow danburite with excellent transparency.

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Multi-colored gems are superimposed on an image of glacier peaks.
Article
Gems and Minerals from the Sub-Arctic

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

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A close-up image of a pile of rough diamonds.
Article
Ups and Downs of 2016 Make for an Uncertain 2017

The diamond industry was slow to recover in 2016 and coloured gems got a welcome shot in the arm. Mixed signals leave no clear indicators for 2017.

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Large rough diamonds sit on a mirror.
Article
Russia’s Lomonosov Diamond Project Shows its Fancy Colours

Lomonosov yields fancy colours – purplish pink, violet, green, yellow and brown – and a high percentage of gem-quality colourless (D-to-Z) diamonds.

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Article
Sri Lanka: A Rich Blend of Old and New on the "Island of Jewels"

In February 2014, GIA field gemmologist Andy Lucas and video producer Pedro Padua travelled to Sri Lanka for two weeks with an ambitious goal: to document the country’s entire gem and jewellery industry, from mud-drenched mines to glittering retail stores.

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Emeralds from Musakashi, Zambia
Three-Phase Inclusions in Emerald and Their Impact on Origin Determination

Discusses the role of three-phase inclusions in emerald, in combination with spectroscopy and trace-element analysis, in determining geographic origin.

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Bench Tip Discover Benefits of CAD/CAM 216x122
Article
Bench Tip Discover the Benefits of CAD/CAM

For many years CAD/CAM technology has been essential in making products from tennis shoes to automobiles and it is rapidly gaining importance in the jewellery industry.

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