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http://dx.doi.org/10.5762/KAIS.2010.11.1.029

Spectroscopic Characteristics of synthetic and natural emerald by heat treatment  

Hwoang, Hye-Kyung (Department of Materials & Chemical Engineering, Hanyang University)
Ahn, Yong-Kil (Division of Materials Science & Engineering, Hanyang University)
Seo, Jin-Gyo (Division of Materials Science & Engineering, Hanyang University)
Park, Jong-Wan (Division of Materials Science & Engineering, Hanyang University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.1, 2010 , pp. 29-36 More about this Journal
Abstract
The spectroscopic characteristics of synthetic and natural emeralds were investigated by UV-Vis and FTIR spectroscopy before and after heat treatment. The Mo and Co for synthetic flux and C1 for synthetic hydrothermal emeralds have been detected by X-ray fluorescence analysis. In the region of UV-Visible, the absorption of emerald from Colombia was generally increased after the heat treatment. The peak which related to C1 component in the $3000-2600cm^{-1}$ was shown in the hydrothermal synthetic emeralds by FTIR spectroscopy. The $2358cm^{-1}$ peak which originates from $CO_2$ was decreased after the heat treatment in the natural emerald. This was corresponded with the changes of gas element after heat treatment.
Keywords
Synthetic emerald; Natural emerald; UV-VIS Spectroscopy; FTIR Spectroscopy; Heat Treatment;
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