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An oval shaped bicolor tanzanite has purple on each side with blue-green in the middle.
Article
December Blues: Birthstone Gifts that Will Delight

Looking for a gift for someone special? December’s birthstones offer a treat for every taste, style and personality – even if it’s not their birth month.

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Vanadium and Chromium-Bearing Pink Pyrope Garnet: Characterisation and Quantitative Colorimetric Analysis

This type of pink pyrope garnet, believed to have been mined in Tanzania, shows a distinct colour-change phenomenon resulting from its unique chemical composition.

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A round, bright red gem displayed on a dark gray background.
Article
The Red Hot Gems of Summer

These red, pink and orange hued gems evoke passion and excitement – and are surefire accessories for sultry summer days.

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Article
The Glory of Green Gems

Green gemstones, which can uplift and heal our spirits, have been popular gem choices ever since we began to adorn ourselves with jewellery.

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New Chromium- and Vanadium-Bearing Garnets from Tranoroa, Madagascar

Pyrope-spessartine garnets from Tranoroa, in southern Madagascar, contain appreciable Cr and somewhat lower V contents.

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Pyrope-Spessartine Garnets with Unusual Colour Behaviour

Unusual colour-change garnets.

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Two Notable Colour-Change Garnets

The gemmological properties and chemical compositions of two unusual colour-change garnets are reviewed.

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The Andradites of San Benito County, California

Mines in San Benito County, California, produce andradite in various colours; some are chatoyant.

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Pastel Pyropes
Pastel Pyropes

Pyrope garnets occur in near-colourless to light orange and pink, as well as the familiar red.

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Pink to Pinkish Orange Malaya Garnets from Bekily, Madagascar

Malaya garnets from Bekily, Madagascar, are predominantly pink to pinkish orange, with some stones orange to red.

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