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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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    钟华邦.矽卡岩型符山石玉——回龙玉石矿的发现及玉石特征[J].矿产与地质,1996,10(4): 256-258.
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    潘兆橹.结晶学与矿物学[M].北京: 地质出版社,2000.
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    法默VC.矿物的红外光谱[M].应育浦,汪寿松,李春庚,等译.北京: 科学出版社,1982.
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