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Garnets under daylight-equivalent (left) and incandescent light (right).
Discovery of Colour-Change Chrome Grossular Garnets from Ethiopia

The first known group of colour-change gem-quality chrome grossular garnet, reportedly from Ethiopia, is examined in GIA’s Carlsbad lab.

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A miner in northern Tanzania examines rhodolite.
Gemstone Guidebook Project

A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.

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Suite of eight faceted and one rough magnesio-axinites.
Magnesio-Axinite from Merelani, Tanzania

A rare find from a limited occurrence in Tanzania’s Merelani Hills, along with a “Merelani mint” garnet, is seen in Tucson.

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Wavers with calculated color panels.
Pyrope-Spessartine Colour-Change Garnet with a High Grossular Component

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

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Purple pyrope-almandine garnets from Manica Province, Mozambique
Purple Pyrope-Almandine Garnet From Mozambique

Analysis of attractive purple garnets from a new deposit in central Mozambique.

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New tsavorite production from Scorpion mine
Update on the Scorpion Tsavorite Mine

A look at the resumed operations and new production of Kenya’s Scorpion tsavorite mine.

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2016 GJX show at Tucson
Tucson 2016

An overview of the 2016 gem shows.

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Demantoid from Veracruz State, Mexico
Mexican Demantoid from New Deposits

Skarn deposits in the Veracruz state of Mexico yield new demantoid material.

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Beijing Olympic medals
Green Nephrite Jade Attracts Buyers in Tucson

An update on the nephrite jade market from the 2015 GJX show.

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A selection of demantoid from Namibia’s Green Dragon mine.
Large Namibian Demantoid Garnet

The Green Dragon mine yields exceptional demantoid, including a round brilliant seen at Tucson’s GJX show.

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