Arizona’s scenic desert and mountain landscape is the perfect backdrop for a modern Wild West road trip in search of gem and mineral treasures.
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Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
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All jewellery professionals are familiar with the city of Shenzhen, a global jewellery manufacturing centre and a leader of China’s fast-growing gem and jewellery industry. Join the GIA team as we tour the city and discover more about its leading jewellery brands.
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An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions.
Read MoreFor more than a century, the Four Peaks mine in Maricopa County, Arizona, has produced gem-quality amethyst.
Read MoreBrazil is currently the leader in overall production of amethyst.
Read More"Damsonite," the trade name for a new type of chalcedony, is analysed and described.
Read MoreAn overview of the plentiful and various gem materials being discovered and produced in Afghanistan.
Read MoreA new and rather unusual gem material and possible treatments are discussed.
Read MoreThis article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.
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