中文摘要：

对中国山东昌乐Be扩散处理、热处理和未处理双色蓝宝石（黄色和蓝色）进行了宝石学常规测试、紫外可见光谱、红外光谱、电子探针和激光剥蚀电感耦合等离子体质谱（LA-ICP-MS）测试,以获得它们的谱学特征,提出其鉴别方法。研究发现Be扩散处理双色蓝宝石仅出现Fe3＋—Fe3＋形成的紫外可见吸收峰,而且377nm吸收峰的强度异常高。红外光谱中,热处理和未处理的双色蓝宝石存在明显的3 310cm-1羟基吸收峰,而该吸收峰在Be扩散处理双色蓝宝石中消失。因此,紫外可见光谱和红外光谱可用于鉴别Be扩散处理、热处理和未处理双色蓝宝石。另外,二碘甲烷浸油实验也可识别Be扩散处理双色蓝宝石。

英文摘要：

Be-diffused,heated and untreated bicolor sapphires（blue and yellow） from Changle City,Shandong Province,China were studied by using standard gemological methods,ultraviolet-visible（UV-Vis） spectroscopy,infrared（IR） spectroscopy,electron microprobe,and laser ablation inductively coupled plasma mass spectrometry（LA-ICP-MS） to obtain the spectra characterization,and to suggest identification methods for them.Only Fe3＋—Fe3＋ absorption bands formed in ultraviolet region appear in Be-diffused bicolor sapphire,which is especially strong at 377 nm.In IR absorption spectra,absorption peak at 3 310 cm-1 appears in heated and untreated bicolor sapphires,while it disappears in Be-diffused bicolor sapphire.Therefore,UV-Vis and IR absorption spectra can be used to identify Be-diffused,heated and untreated bicolor sapphires.On the other hand,methylene iodide immersion observation also can be used to identify Be-diffused bicolor sapphire.