A Case Study: GRS“Pigeon's blood”Ruby Colour Analysis and Implications
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摘要: 为了探究GRS证书中对于“鸽血红”红宝石的判定依据，采用显微分光光度计，对几枚GRS“鸽血红”红宝石样品进行了透过率值的测量。一方面在色度学的基础上，将测量结果转换为样品的CIE均匀色度坐标，以此来探究GRS“鸽血红”红宝石的颜色定量范围；另一方面结合宝石学理论，排除多色性和荧光对红宝石颜色测量的影响，并解释了部分同色异谱的红宝石难以称为“鸽血红”红宝石的原因。研究分析发现，GRS将具备缅甸红宝石产地特征的艳红色红宝石称为“鸽血红”红宝石。Abstract: In order to test the criteria provide by the GRS certificate for“pigeon’s blood”ruby，the authors use microspectrophotometer to measure the transmittance value of several GRS“pigeon’s blood”ruby samples.On one hand，colorimetric measurements of the samples are converted to CIE chromaticity coordinates for the quantitative range of colour of GRS“pigeon’s blood”ruby.On the other hand，the authors exclude the effects of pleochroism and fluorescence on the colour measurement，and explain the reasons for some metamerism ruby which can’t be called“pigeon’s blood”ruby with the help of gemmology theories.According to the research and analysis，GRS defines those vivid red rubies with features of Burma ruby as“pigeon’s blood”rubies.
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[1] 荆其诚.色度学[M].北京:科学出版社,1979.94. [2] 周丰崑,陈淑芳,刘伟奇,等.CIE1976(L*a*b*)匀色空间颜色变量特性研究[J].光学机械,1992,(1):116-121. [3] Report details[EB/OL].http://www.gemresearch.ch/report.html,2012-08-01.
[4] 张蓓莉.系统宝石学(第二版)[M].北京:地质出版社,2006. [5] Why are rubies red?[EB/OL].http://www.webexhibits.org/causesofcolor/6AA.html,2012-08-01.
[6] 胡媛,王佳,严岩.同色异谱解决方案——光谱复制[J].印刷世界,2012,(1):42-45. [7] Master set GRS for rubies ranging from pinkish-red to“pigeon’s blood”(vivid red)[EB/OL].http://www.gemresearch.ch/mstr_set.htm,2012-08-06.
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