Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.
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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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This section, from the Spring 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreSynthetic alexandrite is being flux-grown in Russia.
Read MoreThe term "alexandrite effect" refers to the apparent change of colour in certain minerals from blue-green or greenish violet in daylight to red or reddish violet in incandescent light.
Read MoreMining fine cat's-eye chrysoberyl and alexandrite in Brazil.
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