Cultured Pearl Market Update

A report from Tucson on the outlook of the pearl market.

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Emerald Dealing in Afghanistan

An experienced gem dealer gives an overview of sourcing gem-quality Afghan emeralds.

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Ethical and Sustainable Vertical Integration in the Sapphire Market

The recession of 2008 transforms a gem business into a vertically integrated operation.

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Fine Gems and Update from Myanmar

A look at top-quality gems and insight into a delegation’s visit to gem mines in Myanmar.

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Jewelry Industry Summit

A report from the second Jewelry Industry Summit, held in Tucson, Arizona on January 29–30, 2017.

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Golden Rutilated Quartz Artisanal Mining Community

Plans to develop a collective in a remote Brazilian rutilated quartz mining community are unveiled.

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Characteristics of Gem-Quality By-Product Synthetic Zincite

Investigates the properties of synthetic zincite produced by industrial kilns in Poland.

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Gem Paintings from Thailand

Paintings created from uncut gem fragments are seen at Tucson’s GJX show.

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Importance of the Secondary Market for Fine Gems

Exceptional gems that are recirculated in the gem market make an impact at the Tucson shows.

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New Designs from Paula Crevoshay

World-renowned jewelry artist Paula Crevoshay displays some of her newest pieces at the Tucson gem shows.

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Moroccan Amethyst:Mining and Marketing

Insight into amethyst mining activity in Morocco.

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A New Discovery of Emeralds from Ethiopia

A report on a new Ethiopian source of high-quality emerald.

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Cuprian Liddicoatite Tourmaline

Identifies 13 copper-bearing tourmalines, which have traditionally been assumed to be elbaite species, as liddicoatite.

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Exceptional Freeform Tanzanite and Oregon Sunstone Rings

A family sources, designs, and carves gems for extraordinary jewelry and pieces.

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Magnificent Sapphires from Montana’s Rock Creek Mine

A look at the 2016 sapphire production from Montana’s Rock Creek deposit.

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Negative Crystals in Sapphires

Sapphires from Baw Mar host multiphase inclusions in appealing patterns.

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Three Faceted Collector Specimens

Three mineral species, not previously seen in the Carlsbad lab, are examined.

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Unusual Dark Orangy Red Cordierite

A cordierite with a color not seen in the GIA lab is examined in New York.

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The Role of Silicon in the Color of Gem Corundum

Considers the previously unreported but critical impact of silicon on the coloration of gem-quality sapphire.

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Pyrope-Spessartine Color-Change Garnet with a High Grossular Component

A color change in rough garnet is observed and plotted in GIA’s Carlsbad lab.

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