Spectroscopic Characteristics of synthetic and natural emerald by heat treatment

열처리에 따른 합성과 천연 에메랄드의 분광특성분석

  • 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)
  • 황혜경 (한양대학교 공학대학원 보석학과) ;
  • 안용길 (한양대학교 공과대학 신소재공학과) ;
  • 서진교 (한양대학교 공과대학 신소재공학과) ;
  • 박종완 (한양대학교 공과대학 신소재공학과)
  • Published : 2010.01.31


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.


Synthetic emerald;Natural emerald;UV-VIS Spectroscopy;FTIR Spectroscopy;Heat Treatment


  1. K. N. Yu, S. M. Tang and T. S. Tay, "PIXE studies of emerald", X-ray Spectrom, 2000.
  2. A. Kleismantas, "Effects of chemical composition and temperature on the formation of beryl varieties". Geologija. Vilnius.4, pp. 13-13, 2003.
  3. D. L. Wood and K. Nassau, "The characterization of beryl and emerald by visible and infrared absorption spectroscopy", American Mineralogist, 53, May-June, 1968.
  4. A. A. Beus and D. A. Mineev, "Contribution to geology and geochemistry of the emerald-bearing zone Muzo-Coscuez, Cordillera Oriental,Colombia", Geol. Rudn . Mestorozhd, 16(4), pp. 18-30, 1974.
  5. L. T. T. Huong,"Microscopic chemical and spectroscopic investigations on emeralds of various origins", am Fachberich Chemie, Pharmazie und Geowissenschaften der Johannes Gutenberg -University Mainz, 2008.
  6. I. Moroz, G. Pancaer and M. Roth, "Laser-induced luminescence of emerald from different sources", j. Gemmology, 1998.
  7. G. L. Miessler and A. T. Donald, "Inorganic chemistry", (3rd Ed),.pearson Education, Inc, NewJersey, pp. 344-345, 2004.
  8. 김원사, "보석학", 도서출판 우성, pp. 347, 1월, 2004.
  9. C. M. Stockton, "The chemical distinction of natural from synthetic emeralds", Gems & Gemology. 20, 3, pp. 141-145, 1984.
  10. J. M. Duroc-Danner, "The identification value of the 2293cm-1infraredabsorptionbandinnaturaland hydrothermal synthetic emerald", J. Gemmology, 30.1/2, pp. 75-82, 2006.
  11. R. Mashkovtsev and S. Z. Smirnov, "The nature of channel constituents in hydrothermal synthetic emerald", J. Gemmology, 29, 4, pp. 215-227, 2004.
  12. C. M. Stockton, "The separation of natural from synthetic emerald by infrared spectroscopy", Gems & Gemology, 23, 2, pp. 96-99, 1987.
  13. L. Kiefert, H. A. Hanni, J. P. Chalain and W. Weber, "Identification of filler substances in emerald by infrared and Raman spectroscopy", J. Gemmology, 26, 8, pp. 501-520, 1999.