一种含管状包裹体合成水晶饰品的宝石学特征及鉴定

GEMMOLOGICAL CHARACTERISTICS OF A TYPE OF SYNTHETIC ROCK CRYSTAL CONTAINING TUBE LIKE INCLUSIONS

对近年来在国内市场出现的一种含管状包裹体的水晶制品进行了详细的宝石学特征及谱学研究 ,获得的主要结论有 :该类型水晶是以 Z( 0 0 0 1 )为种晶板、在 2 80～ 3 3 8°C的条件下合成的 ;富含包裹体的部分可能是合成过程早阶段的产品。该类型水晶的出现说明合成水晶猫眼是可能的。不同颜色含管状包裹体合成水晶的特征红外光谱吸收峰位于 3 584 cm-1。其它的鉴别特征包括相对密度较小、含有定向排列的三角形管状包裹体或两相气液包裹体、面包屑状包裹体等 ,其中定向楔状气液包裹体可作为该类合成水晶常规的鉴定性特征。

The gemmological characteristics and spectra of a type of rock crystal containing tube like inclusions appearing in market in recent years are studied. The results show that the rock crystals grow on a seed crystal Z (0001) under the temperature between 280°C and 338°C. The rock crystal with rich tube like inclusions should be a product of the early stage of growth. The occurrence of the rock crystal indicates the possibility of producing rock crystal cat′s eye. The synthetic rock crystals of any colour have an absorption peak at 3584cm -1 in the infrared spectra. The other distinguishing characteristics include a relative lower density, oriented triangle tube like inclusions with a trianglar cross section or two phase tapered gas liquid inclusions and breadcrumb like inclusions, etc. The oriented tube like gas liquid inclusions can be regarded as a common identifying characteristics of the synthetic rock crystal.