In order to understand this variety of colour , you will have to brush up your knowledge of gemmology a little : tourmalines are mixed crystals of aluminium boron silicate with a complex and changing composition 是极为复杂的硼铝硅酸盐，其中可含一种或数种以下成分：镁钠锂铁钾或其他金属。
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The conventional methods of the gemmology and the modern instruments of electronic probe , ultraviolet - visible spectrophotometer , fourier transform infrared spectrometer , cathodoluminescence spectrometer are used to research and analyse the flux - grown synthetic spinel and compare them with the natural spinels 摘要采用常规的宝石学研究方法以及电子探针、紫外可见分光光度计、傅里叶变换红外光谱仪和宝石阴极发光光谱仪等现代测试仪器，对助熔剂法合成尖晶石的宝石学特征进行了全面分析，并与天然尖晶石进行了对比。
