一种体色呈蓝色的铍扩散处理蓝宝石

亓利剑, 曾春光

亓利剑, 曾春光. 一种体色呈蓝色的铍扩散处理蓝宝石[J]. 宝石和宝石学杂志, 2008, 10(1): 1-4.
引用本文: 亓利剑, 曾春光. 一种体色呈蓝色的铍扩散处理蓝宝石[J]. 宝石和宝石学杂志, 2008, 10(1): 1-4.
QI Li-jian, CENG Chun-guang. Beryllium-Diffused Treatment Sapphire with Blue Body Colour[J]. Journal of Gems & Gemmology, 2008, 10(1): 1-4.
Citation: QI Li-jian, CENG Chun-guang. Beryllium-Diffused Treatment Sapphire with Blue Body Colour[J]. Journal of Gems & Gemmology, 2008, 10(1): 1-4.

一种体色呈蓝色的铍扩散处理蓝宝石

详细信息
    作者简介:

    亓利剑(1956—),男,教授,地球化学专业,主要从事宝石学教学与研究工作。

  • 中图分类号: TS93;P619.28

Beryllium-Diffused Treatment Sapphire with Blue Body Colour

  • 摘要: 针对近期市场上出现的一种体色呈蓝色或淡蓝色的Be扩散处理蓝宝石,采用EPMA,LA-ICP-MS、激光拉曼光谱仪、UV-NIS分光光度计等分析测试仪器,对50粒Be扩散处理蓝宝石样品的化学成分、拉曼光谱、UV-NIS吸收光谱特征进行了研究。测试与研究结果表明,这种Be扩散处理蓝宝石样品中,Be的质量分数最低为5.28×10-6%,最高为17.51×10-6%,平均为8.74×10-6%;其内普遍含有形态各异的斜锆石熔融或假象包裹体;由于Fe3+离子d-d电子跃迁,导致形成了样品的吸收光谱a带(377,386,451 nm)。在高温条件下,由Be扩散诱生的色心可能是导致蓝色蓝宝石呈色的主要缘由。
    Abstract: A type of beryllium-diffused treatment sapphire with blue or light blue body colour has recently appeared on gem markets.The chemical compositions,Raman spectrum and the characteristics of UV-NIS absorption spectrum of 50beryllium-diffused treatment sapphires samples are investigated by using EPMA,LA-ICP-MS,laser Raman spectrometer and micro-optical fibre spectrometer.The testing and research reasults show that the minimum mass percent of beryllium is5.28×10—6% and the maximum is17.51×10—6% and the average is8.74×10—6% in the beryllium-diffused treatment sapphire samples.Generally,the samples contain all forms of baddeleyite melting or pseudomorph inclusions.Because of d—d electron transition in the Fe3+ion,the absorption spectrum band a (377,386,451nm)of the samples is formed.With the high temperature,the beryllium-diffused and induced vacancy colour center may result in the blue colour of sapphire.
  • [1]

    John L E,Kenneth S,Shane F M,etc.Beryllium diffusion of ruby and sapphire[J].Gems & Gemology,2003,39(2): 84-135.

    [2]

    Karl S,Dietmar S.A microscopy-based screening system to identify natural and treated sapphires in the yellow to reddish-orange colour range[J].The Journal of Gemmology, 2005,29(7):257-264.

    [3]

    Karl S,Dietmar S.The causes of colour in untreated,heat treated and diffusion treated orange and pinkish-orange sapphires——a review[J].The Journal of Gemmology,2004,29 (3):149-181.

    [4]

    Visut P A,Tobias H.Yellow and brown coloration in beryllium-treated sapphires[J].The Journal of Gemmology,2004, 29(2):77-103.

    [5]

    Shane M,Moses T,Koivula J I.A new corundum treatment from Thailand[EB/OL].http://www.GIA.GRE,2002-01-28.

    [6]

    Themelis T.Beryllium-treated rubies & sapphires[EB/OL]. http://www.Themelis,2003.

    [7]

    Rankin A Edwards.Some effects of extreme heat treatment on zircon coundum[J].The Journal of Gemmology,2002,28 (5):257-264.

    [8] 亓利剑,曾春光.扩散处理合成蓝宝石的特征及其扩散机制[J].宝石和宝石学杂志,2006,8(3):4-9.
计量
  • 文章访问数:  23
  • HTML全文浏览量:  1
  • PDF下载量:  6
  • 被引次数: 0
出版历程
  • 收稿日期:  2008-01-17
  • 修回日期:  2008-02-17

目录

    /

    返回文章
    返回