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金云仙珠宝课堂

珍珠、翡翠、玉石、宝石、碧玺、琥珀、珊瑚

砗磲基本特性与化学成分

作者:敏敏 点击:次 时间:2009-12-04 17:40

  基本特性

  

 

  从宝石学的观点来看,具有美丽珍珠光泽而颜色洁白、有晕彩且质地细腻的贝壳才可作为宝石,而砗磲贝却是所有贝类制品中最漂亮的。

  

  

砗磲如意观音

 

  化学成分

  1.化学成分砗磲含碳酸钙为86.65%~92.57%,壳角蛋白为5.22%~11.21%,水为0.69%~0.97%。另外含微量元素和10多种氨基酸;

  2.构造其矿物以文石为主,与珍珠一样具有特征的层状构造,外壳光洁明亮,在阳光下能出现七彩虹光;

  3.颜色有白色、牙白色与棕黄色相间两个品种,但以牙白与棕黄相间呈太极形的品种为上品。以耀眼的金丝亮丝和绿色肠管为其特色;

  4.光泽珍珠光泽;

  5.硬度一般为2.5~3,牙白与棕黄相间的品种可达4;

  6.密度2.70g/cm3。

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