“纳米西陶祖母绿”的宝石学及谱学特征研究  

Gemological and Spectrographic Studies on a New Material"Nano-ceramic emerald"

作　　者：李凤怡 刘子琪 刘迎新[1] LI Fengyi;LIU Ziqi;LIU Yingxin(School of Gemmology,China University of Geoscience(Beijing),Beijing 100083;School of Ocean and Earth Science,Tongji University,Shanghai 200082)

机构地区：[1]中国地质大学(北京)珠宝学院,北京100083 [2]同济大学海洋与地球科学学院,上海200082

出　　处：《中国宝玉石》2022年第2期3-9,共7页China Gems & Jades

摘　　要：“纳米西陶祖母绿”是由Rus Gems公司合成的一种新型珠宝材料,颜色鲜艳,光学性能良好,是一种祖母绿仿制品。本文以“纳米西陶祖母绿”为研究对象,通过常规宝石学测试、X射线荧光光谱分析(XRF)等成分测试方法,X射线粉晶衍射(XRD)等结构测试方法及红外光谱、拉曼光谱、紫外―可见光吸收光谱等谱学测试手段,对其常规宝石学性质、化学成分、谱学特征及致色机理进行了初步探讨。XRD研究结果表明,“纳米西陶祖母绿”的主要成分为具有锌尖晶石相的微晶玻璃,相对结晶度为66%;XRF分析表明样品中绿色由Ni2+导致,分别对应紫外―可见光吸收光谱中450 nm、560 nm、630 nm附近的吸收峰。"Nano-ceramic emerald",a new kind of gem material with vivid color and excellent optical properties,is a kind of emerald imitation synthesized by Rus Gems company.In order to discuss the conventional gemological characteristic,chemical compositions,spectral characteristics and color mechanism of"Nano-ceramic emerald",lots of experiments were carried out,such as conventional gemological testing,X-ray diffraction(XRD),X-ray fluorescence(XRF),infrared spectrum(IR),Raman spectrum(Raman)and UV-Vis spectrum.XRD results show that the main component of the sample is one kind of microcrystalline glass with gahnite phase and 66%relative crystallinity.XRF analysis shows that the green color is caused by Ni2+,which generates UV absorption peaks near 450 nm,560 nm and 630 nm,respectively.

关 键 词：“纳米西陶祖母绿” 宝石学特征 化学成分 谱学特征 

分 类 号：P578.968[天文地球—矿物学]