珠宝玉石具有期独特的保值价值、艺术价值及收藏价值，占有一定的经济市场，而市面上由于其价值原因，鱼目混珠、以次充好、以假替代等各种造假手段都应运而生，这给此类宝石的传统鉴定带来了较大的困难。近年来，显微共焦拉曼光谱仪在宝石鉴定领域内成了强有力的鉴别手段。目前，世界上著名宝石协会的研究实验室，如英国FGA、美国GIA 等，均用其作为权威性的分析工具。

Electron imaging and Raman spectroscopy are established techniques for viewing and analysing carbon nanotubes. Performing these two techniques usually requires the sample being transferred between a scanning electron microscope(SEM) and a Raman spectrometer. This application note illustrates the advantages of Renishaw^^s structural and chemical analyser(SCA) for imultaneous secondary electron imaging and Raman spectroscopy of single-wall carbon anotubes(SWNTs).