Registration of the faceted gems absorption spectra
Authors:
About authors
- National Mineral Resources University (Mining University)
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.
References
- Природные и синтетические алмазы / Г.Б.Бокий, Г.Н.Безруков, Ю.А.Клюев, М.А.Налетов, В.И.Непша. М.: Наука, 1986. 222 с.
- Collins A.T. Optical centres produced in diamond by radiation damage // New diamond and frontier carbon technology 2007. V.17. N 2. P.47-61.
- Collins A.T. Colour changes produced in natural brown diamonds by high-pressure, high temperature treatment / А.Т.Collins, Н.Kanda, Н.Kitawaki // Diamond Relat. Mater. 2000. V.9. P.13-122.
- Collins A.T. Colour of diamond and how it may be changed // Journal of Gemmology. 2001. V.27. N 6. P.341-359.
- Ekgasit S. Transflectance Spectra of Faceted Diamonds Acquired by Infrared Microscopy / S.Ekgasit, Р.Thongnopkun // Applied spectroscopy, 2005. V.59. N 9. P.1160-1165.
- Natural, untreated diamonds showing the A, B and C infrared absorptions («ABC diamonds»), and the H2 absorption/ Т.Hainschwang, F.Notari, Е.Fritsch, L.Massi // Diamond Relat. Mater. 2006. V.15. P.1555-1564.
- Observation of the H2 defect in gem-quality type ia diamond / P.R.Buerki, I.M.Reinitz, S.Muhlmeister, S.Elen
- // Diamond Relat. Mater. 1998. V.8. P.1061-1066.
- The Gemological Properties of Russian Gem- Quality Synthetic Yellow Diamonds / J.E.Shighley, E.Fritch, J.I.Koivula, N.V.Sobolev, I.Y.Malinovsky, Y.N.Pal'yanov // Gems and Gemology. 1993. V.29. N 4. P.228-248.
- Thongnopkun P. FTIR Spectra of faceted diamonds and diamond simulants/ Р.Thongnopkun, S.Ekgasit // Diamond Relat. Mater. 2005. V.14. P.1592-1599.
- Tretyakova L.I. A combine spectroscopic method for nondestructive gem identification / L.I.Tretyakova, N.B.Reshetnyak, Y.V.Tretyakova // Journal of Gemmology. 1997. V.25. N 8. P.532-539.
Similar articles
Georadar researches of structural features and water cutting of overburden rocks for coal open-cast mining
2013 G. A. Kulyandin, A. V. Omelyanenko, L. L. Fedorova
Physical and chemical genesis of swell and osmotic shrinkage of clay soils in construction’s base by results of experimental researches
2013 R. E. Dashko, A. V. Shidlovskaya
Geodynamic types of rare-metal granite magmatism and associated ore deposits
2013 S. M. Beskin, Yu. B. Marin