摘要
本文着重讨论了光源、宝石在台面上的放置位置、接触液和远视技术等技术关键和细节。并详细介绍了在不同使用条件下，不同琢型的宝石，在运用远视技术时所出现的１６种轮廓外形。
It is mainly discussed that the technical details and keys to ligh source Position on gem on stand surface,contact liquid and lester B. Benson Jr's method and so on. The sixteen kinds of contours observed for the gems by means of lester B. Benson Jr's method are also iniroduced in detail under diffenent use conditions and geoms of cut.
出处
《华东地质学院学报》
1996年第3期237-241,共5页
Journal of East China Geological Institute
关键词
宝石
折射率
测定
远视技术
gem
refractive index
determination
lester B. Benson Jr's method
