Raman spectroscopy in gemmology as seen from a ‘jeweller’s’ point of view
| Autor: | Marco Giarola, Gino Mariotto, David Ajò, Marianna Barberio |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Anatase
Materials science anatase sapphire Jeweller's point of view engineering.material hematite law.invention symbols.namesake Optics Optical microscope law Gemstones Confocal Raman micro-spectroscopy General Materials Science microcrystalline inclusions confocal Raman mirco-spectroscopy Spectroscopy business.industry Diamond Hematite Nanocrystalline material visual_art Inclusions symbols Sapphire visual_art.visual_art_medium engineering Gemstone Raman spectroscopy business |
| Zdroj: | Journal of Raman spectroscopy (Online) (2012). doi:10.1002/jrs.4129 info:cnr-pdr/source/autori:Giarola M.; Mariotto G.; Barberio M.; Ajò, D.;/titolo:Raman spectroscopy in gemmology as seen from a 'jeweller's' point of view/doi:10.1002%2Fjrs.4129/rivista:Journal of Raman spectroscopy (Online)/anno:2012/pagina_da:/pagina_a:/intervallo_pagine:/volume |
| DOI: | 10.1002/jrs.4129 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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