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Volume 7 Issue 1
Mar.  2005
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LI Li-ping, CHEN Hua, LUO Qu-kan. Application of GemDialogue and GemSet Colour System in Colour Description and Grading of Coloured Gemstones[J]. Journal of Gems & Gemmology, 2005, 7(1): 20-24.
Citation: LI Li-ping, CHEN Hua, LUO Qu-kan. Application of GemDialogue and GemSet Colour System in Colour Description and Grading of Coloured Gemstones[J]. Journal of Gems & Gemmology, 2005, 7(1): 20-24.
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Application of GemDialogue and GemSet Colour System in Colour Description and Grading of Coloured Gemstones

  • 1. Gemmological Institute, China University of Geosciences, Wuhan 430074, China;

  • 2. National Gem Testing Center, Beijing 100013, China

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  • Received Date: December 23, 2004
    Graphical Abstract
    • Abstract
  • In international coloured gemstone trade, all the asking price and bid price are given according to the total quality grade (1 to 10 ) and carat of coloured gemstones. In order to regularize our gem and jewelry appraisal, it is vital important to describe and grade coloured gemstones in scientific way. GemDialogue and GemSet are the two important colour systems, and they are widely used by international jewelry appraisers. In the paper, the two systems are introduced and the application of the two systems in coloured gemstones grading are discussed.
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    • References (4)
  • [1]
    Miller A M.Gem and Jewelry Appraising——Techniques of Professional Practice [M](EdⅡ).Woodstock,Vermont:Gemstone Press,1999.56-57.
    [2]
    Richard H Cartier.Professional Jewellery Appraising[M](EdⅡ).Canada:Fischer Press,2004.95-96.
    [3]
    张蓓莉,陈华,孙凤民珠宝首饰评估[M]北京:地质出版社,2000
    [4]
    丘志力,李立平,陈炳辉,等珠宝首饰系统评估导论[M]武汉:中国地质大学出版社,2003
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