桂林水热法合成红宝石的宝石学特征及呈色

Gemmological Characters and Colouration of Hydrothermal Synthetic Rubies from Guilin

采用传统的宝石学研究方法 ,并配合 IR,UV-VI和 EPMA测试分析方法 ,对新近生长的桂林水热法合成红宝石的宝石学特征及呈色进行了初步研究。结果表明 ,该类合成红宝石中普遍存在 Al— OH伸缩振动致弱谱带 ( 330 7,32 31 ,31 84 ,30 1 3cm— 1)和 KHCO3中 O—H伸缩振动致弱谱带 ( 2 365 ,2 34 8cm— 1) ,它们是鉴别该类合成红宝石的重要依据。

The gemmological characters and colouration of hydrothermal synthetic rubies from Guilin are presented, using the IR, UV VI and EPMA testing methods. The research shows that the infrared absorptions by Al-OH and H-O in the hydrothermal synthetic rubies from Guilin, in the direction vertical to the {2243}, are dominated the stretching vibration weak peaks at 3307, 3231, 3184, 3013cm -1 and 2364, 2348cm -1 , and can be considered as an important indicator for the identifying hydrothermal synthetic rubies from Guilin.