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Vol 200
Pages:
163-166
Download volume:
RUS
Article

Registration of the faceted gems absorption spectra

Authors:
E. A. Vasilev
About authors
  • leading engineer National Mineral Resources University (Mining University)
Date submitted:
2012-07-29
Date accepted:
2012-09-27
Date published:
2013-04-16

Abstract

There is shown the possibility of recording the visible and infrared absorption spectra in the faceted gems, including those in jewels. Investigation was carried out with the infrared/visible range spectrometer, equipped with a microscope working in the reflection mode. It is demonstrated the possibility to detect signs of treatment, synthetic origin of diamonds of the main shapes without any sample preparation or removing from jewels.

Область исследования:
(Archived) Geology and metallogeny
Keywords:
diamond brilliant cutting infrared spectrometry gem identification
Go to volume 200

References

  1. Bokiy G.B, Bezrukov G.N., Klyuev U.A. et al. Nature and synthetic diamonds. Мoscow: Nauka, 1986. 222 p.
  2. Collins A.T. Optical centres produced in diamond by radiation damage // New diamond and frontier carbon tec hnology. 2007. V.17. N 2. P.47-61.
  3. Collins A.T., Kanda H., Kitawaki H. Colour changes produced in natural brown diamonds by high-pressure, high temperature treatment // Diamond Relat. Mater. 2000. V.9. P13-122.
  4. Collins A.T. Colour of diamond and how it may be changed // Journal of Gemmology. 2001. V.27. N 6. P.341-359.
  5. Ekgasit S., Thongnopkun P. Transflectance Spectra of Faceted Diamonds Acquired by Infrared Microscopy // Applied spectroscopy, 2005. V.59. N 9. P.1160-1165.
  6. Hainschwang T., Notari F., Fritsch E., Massi L. Natural, untreated diamonds showing the A, B and C infrared a bsorptions (“ABC diamonds”), and the H2 absorption/ // Diamond Relat. Mater. 2006. V.15. P.1555-1564.
  7. Buerki P.R., Reinitz I.M., Muhlmeister S., Elen S. Observation of the H2 defect in gem-quality type ia diamond // Diamond Relat. Mater. 1998. V.8. P.1061-1066.
  8. Shighley J.E., Fritch E., Koivula J.I., Sobo lev N.V., Malinovsky I.Y., Pal'yanov Y.N. The Gemological Properties of Russian Gem-Quality Synthetic Yellow Diamonds // Gems and Gemology, 1993. V.29. N 4. P.228-248.
  9. Thongnopkun P., Ekgasit S. FTIR Spectra of faceted diamonds and diamond simulants // Diamond Relat. Mater. 2005. V.14. P.1592-1599.
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