高温高压合成钻石常见宝石学鉴定特征  

Gemmological identification characteristics of synthesis of diamond at high temperature and high pressure

作　　者：戴正之 吕晓瑜[1,2] 封卓然 Dai Zhengzhi;LüXiaoyu;Feng Zhuoran(Shanghai Institute of Measurement and Testing Technology;National Center of Quality Supervision&Inspection On Gold-Silver Products(Shanghai);Shanghai PuDong Customs)

机构地区：[1]上海市计量测试技术研究院 [2]国家金银制品质量监督检验中心(上海) [3]上海浦东海关

出　　处：《上海计量测试》2021年第2期2-7,共6页Shanghai Measurement and Testing

摘　　要：通过对常见的高温高压合成钻石进行宝石学及谱学分析研究,并与天然钻石以及化学气相沉淀法合成钻石的相应特征进行比对,发现含有金属催化剂残余包裹体、黑十字状或沙漏状生长特征是高温高压合成钻石的典型特征,具有诊断意义;而对于缺乏上述特征的样品,观察分析长波和短波紫外光下的荧光反应及样品晶格中的氮缺陷的红外光谱表征,是常规检测的必要手段;光致发光谱具有一定的诊断意义,对于有条件的实验室可深入研究应用。Through the gemmological and spectroscopic analysis of common HPHT synthetic diamonds,and comparing with the corresponding characteristics of natural diamonds and CVD synthetic diamonds,it is found that metal catalyst residues,"black cross"or"hourglass"growth characteristics are the typical characteristics of HPHT synthetic diamonds,and have diagnostic significance;for the samples lacking the above characteristics,combined with long wave and short wave fluorescence reaction,the infrared spectrum characterization of nitrogen defects in the sample lattice is a necessary means of conventional detection;photoluminescence spectrum has a certain diagnostic significance,which can be further studied and applied in the laboratory with conditions.

关 键 词：高温高压 合成钻石 荧光图像 正交偏光图像 红外光谱 紫外光谱 光致发光谱 

分 类 号：TQ164[化学工程—高温制品工业] O657.3[理学—分析化学]