結晶欠陥・組織観察にもとづく宝石の鑑別 : 光散乱トモグラフィの宝石学への応用(ルビー)

概要

論文の詳細を見る
Light scattering tomography is a newly developed technique to characterize and visualize various crystalline defects in transparent to translucent crystalline materials, such as inclusions of micron size, dislocations, growth zoning, growth sectors and subgrain boundaries (Moriya and Ogawa, 1978, 1980, 1981, 1982, 1983). In this technique, a narrow laser beam is transmitted through a specimen, and the beam seattered by crystalline defects in the specimen are recorded on a photographic film which is scanned over the specimen. Thus the distribution of defects and textures in the specimen can be investigated nondestructively. Since crystalline defects and textures are good indicators of growth eonditions, histories and inethods, this method can be used as a new powerfull method in testing and identifying natural, synthetic and treated stones. In this paper, the results obtained by applying the light scattering tomography to natural, and synthetic ruby cut stones of several origins are reported. Ruby cut stones investigated are naturals from Thailand and Burma, synthetics by Vernueil, fioating zone, flux (several companies) and hydrothermal techniques. Each stone exhibits these charaeteristic features, Characteristic features visualized by the light scattering tomography can be used as diagnostic features.
宝石学会(日本)の論文
1985-05-25