This article is part of the Journal of Raman Spectroscopy special issue entitled “Raman spectroscopy in art and archaeology” edited by Juan Manuel Madariaga and Danilo Bersani.
Raman spectroscopy in gemmology as seen from a ‘jeweller's’ point of view†
Version of Record online: 16 JUL 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Special Issue: Raman spectroscopy in art and archaeology
Volume 43, Issue 11, pages 1828–1832, November 2012
How to Cite
Giarola, M., Mariotto, G., Barberio, M. and Ajò, D. (2012), Raman spectroscopy in gemmology as seen from a ‘jeweller's’ point of view. J. Raman Spectrosc., 43: 1828–1832. doi: 10.1002/jrs.4129
- Issue online: 21 NOV 2012
- Version of Record online: 16 JUL 2012
- Manuscript Accepted: 14 MAY 2012
- Manuscript Revised: 17 APR 2012
- Manuscript Received: 23 DEC 2011
- confocal Raman micro-spectroscopy;
- jeweller's point of view
Some gemstones (diamonds, coloured stones or assembled gems) found in the jewellery commerce, when observed by an optical microscopy or even at naked eye, exhibit unusual characteristics, such as inclusions incorporated at different depths. The investigation by confocal Raman micro-spectroscopy allowed identification of a blue sapphire and of nanocrystalline anatase in the same surface region of a cut and polished diamond. Moreover, hematite (α-Fe2O3) inclusions of rectangular shape, embedded at different depths, ranging from a few microns to some tens of microns beneath the gemstone surface, were identified in the coloured stones. Finally, a detailed study of an assembled gem evidenced spectral features that can be put in relation with its fabrication process. Copyright © 2012 John Wiley & Sons, Ltd.