FeatureGems & Gemology, Fall 2009, Volume 45, No. 3

Polymer-Filled Aquamarine

Li Jianjun, Sun Yuan, Hao Wangjiao, Luo Han, Cheng Youfa, Liu Huafeng, Liu Ying, Ye Hong, Fan Chengxing

The authors have encountered hundreds of polymer-filled aquamarines in the Chinese jewelry market. This treatment can be identified with a standard gemological microscope, since it has characteristics such as a flash effect and relief lines. In addition, some of the filled fractures fluoresce chalky white to long-wave UV radiation. FTIR spectroscopy reveals diagnostic features at ~3100–2850 cm-1 that are related to benzene and ethylic C-H bonds in a polymer.

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