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  • Cover of Gems & Gemology Summer 2010 issue, featuring pearl and gemstone necklace

    Summer 2010

    • $15.00
    The PDF version of this issue is available at no charge. Visit www.gia.edu

    The Wittelsbach-Graff and Hope Diamonds: Not Cut from the Same Rough
    Eloise Gaillou, Wuyi Wang, Jeffrey E. Post, John M. King, James E. Butler, Alan T. Collins, and Thomas M. Moses

    Play-of-Color Opal from Wegel Tena, Wollo Province, Ethiopia
    Benjamin Rondeau, Emmanuel Fritsch, Francesco Mazzero, Jean-Pierre Gauthier, Benedicte Cenki-Tok, Eyassu Bekele, and Eloise Gaillou

    A New Type of Composite Turquoise
    Gagan Choudhary

    New Occurrence of Fire Opal from Bemia, Madagascar
    Martina Simoni, Franca Caucia, Ilaria Adamo, and Pietro Galinetto

    X-ray Computed Microtomography Applied to Pearls: Methodology, Advantages, and Limitations
    Stefanos Karampelas, J¸rgen Michel, Mingling Zheng-Cui, Jens-Oliver Schwarz, Frieder Enzmann, Emmanuel Fritsch, Leon Leu, and Michael S. Krzemnicki

    X-ray Computed Microtomography: Distinguishing Natural Pearls from Beaded and Non-Beaded Cultured Pearls
    Michael S. Krzemnicki, Sebastian D. Friess, Pascal Chalus, Henry A. Hanni, and Stefanos Karampelas

    Hibonite: A New Gem Mineral
    Thomas Hainschwang, Franck Notari, Laurent Massi, Thomas Armbruster, Benjamin Rondeau, Emmanuel Fritsch, and Mariko Nagashima

    Every issue also includes the most up-to-date reports from the GIA Laboratory (Lab Notes) and gemologists around the world (Gem News International).

    GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout.
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    SKU: 4301003