Identification of gemstone treatments with Raman spectroscopy

Lore Kiefert; Henry A. Haenni; Jean-Pierre Chalain

doi:10.1117/12.401634

29 September 2000 Identification of gemstone treatments with Raman spectroscopy

Lore Kiefert, Henry A. Haenni, Jean-Pierre Chalain

Proceedings Volume 4098, Optical Devices and Diagnostics in Materials Science; (2000) https://doi.org/10.1117/12.401634
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

The newest gemstone treatment concerns brownish diamonds of type IIa. These can be improved to near colorless by an enhancement process developed by General Electric, USA, using high temperature and pressure. A comparison of Raman spectroscopic features in the visible area (luminescence bands) of both treated and untreated colorless diamonds is given. Finally, examples of artificially colored peals and corals and their detection with Raman spectroscopy are shown.

Citation Download Citation

Lore Kiefert, Henry A. Haenni, and Jean-Pierre Chalain "Identification of gemstone treatments with Raman spectroscopy", Proc. SPIE 4098, Optical Devices and Diagnostics in Materials Science, (29 September 2000); https://doi.org/10.1117/12.401634

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