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    Precious corals are not just used in jewelry, but also in complex objects and statues such as seen in this temple in Taiwan. (Photo: Laurent Cartier)

    Precious corals and genomic transparency

    Gemstones Issue 56 Dr Laurent E. Cartier, Dr. Bertalan Lendvay, Dr. Akitsugu Sato and Dr. Michael S. Krzemnicki -
    Precious corals have been coveted across different continents and are some of the oldest gems used by humans. Historically, they were found in the...
    Fei-Cui-Global-Supply-Chain-Research

    Fei Cui Global Supply Chain Research – Update

    Gemstones Issue 56 InColor -
    During the Christmas to New Year 2024/2025 period and throughout 2025, the Guild Field Expedition Team traveled to Fei Cui producing areas and market...
    Tourmaline inclusion in an emerald from Zambia (Kafubu), (FOV - 1.483 mm).

    Determination of Emerald Origin Through the Identification of Solid Inclusions

    Gemstones Issue 56 T. Rozet, V. Fejoz, A. Arsac, M.P.H. Curti and W. Oei -
    Introduction The study of solid inclusions (Figure 1) remains one of the most relevant sources of information for determining the geographic origin of gemstones. The...

    The Gold of The North . A View from Gdansk, Poland

    Gemstones Agnieszka Klikowicz-Kosior and Michal Kosior -
    Amber is one of Nature's most remarkable organic gemstones. Appreciated around the world for thousands of years for its many qualities, this intriguing gem...
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    InColor magazine is the ICA's quarterly publication, all about colored gemstones. A must read for anyone in the gemstone and jewelry industry, as well as the gem enthusiast. InColor reports on information relating to the gemstone trade, mining, gemology, education, trends, fashion as well as ICA member related issues.
    Contact us: ica@gemstone.org

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