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Volume 7 Issue 2
Jun.  2005
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YU Xiao-yan, KE Jie, LEI Yin-ling. Study on Gemmological Characteristics of Idocrase Jade[J]. Journal of Gems & Gemmology, 2005, 7(2): 14-17.
Citation: YU Xiao-yan, KE Jie, LEI Yin-ling. Study on Gemmological Characteristics of Idocrase Jade[J]. Journal of Gems & Gemmology, 2005, 7(2): 14-17.
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Study on Gemmological Characteristics of Idocrase Jade

  • 1. Gemmological Institute, China University of Geosciences, Beijing 100083, China;

  • 2. National Gemstone Testing Center, Beijing 100013, China;

  • 3. Shanxi Gemstone Testing Station, Xi'an 710054, China

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  • Received Date: May 09, 2005
    Graphical Abstract
    • Abstract
  • A new jade——idocrase jade, also known as californite, is found in the market in China. It is similar to jadeite jade in the appearance, relative density and visible absorption spectrum. The gemmological characteristics are investigated systematically by using EMPA, X-ray powder diffraction, IR reflectance spectrum and laser Raman spectrum. The idocrase jade can be easily identified from jadeite jade and hydrogrossular by its higher refractive index, texture and 465 nm absorption spectrum.
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    • References (4)
  • [1]
    CorneliusSHurlbutJr,RobertCKammerling.Gemmology[M].London: AWiley IntersciencePublication,1991.233.
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