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The gemmological properties and infrared spectra of brucite, an imitation of nephrite and Shoushan stone
Li Jianjun, Yu Xiaoyan, Cai Jia, Liu Xiaowei, Fan Chengxing and Cheng Youfa
Nephrite and Shoushan stones have a long history of use as ornamental gem material for jewellery and carving in China. However, the reserves of the stones have dramatically decreased recently and a growing number of their imitations, such as brucite, have entered the Chinese market. Microscope examination, testing with dilute hydrochloric acid, Fourier Transform Infrared (FTIR) spectra and energy-dispersive X-ray fluorescence (EDXRF) spectra have proved to be useful techniques to distinguish nephrite or Shoushan stones from brucite.
All the Journal articles placed online in 2010 will also be published in hard copy as a single Journal issue and sent to all paid-up Gem-A members early in 2011 as part of their 2010 subscription. Gem-A members may login to the membership area to view the full articles.