天然黑色单晶钻石鉴定特征

Identification of natural black diamonds

使用宝石显微镜、DiamondView^(TM)、红外光谱仪、拉曼光谱对3颗天然黑色单晶钻石进行测试和研究。通过常规的放大观察可知黑色钻石内部含有大量暗色包裹体。DiamondView^(TM)荧光成像技术显示这几颗钻石的自然生长结构。红外光谱测试结果表明其中一颗黑色钻石是氮浓度较高的Ia型钻石。获取钻石内部石墨包体的拉曼光谱,是快速有效判断黑色钻石天然性的鉴定方法。

Three natural black diamonds were tested by microscope,DiamondView^(TM),infrared spectrometer and raman spectrometer.Through magnifying observation,we can see that there are a lot of dark inclusions in the black diamond.Fluorescence imaging technology shows the natural growth structure of these diamonds.The results of infrared spectrum show that one of the black diamonds is Ia type with high nitrogen concentration.Raman spectroscopy is a rapid and effective method to identify the nature of black diamond.