Determining the Authenticity of Gemstones Using Raman Spectroscopy

• Aaron Aponick ^[1] ; Emedio Marchozzi ^[1] ; Cynthia R. Johnston ^[1] ; Carl T. Wigal ^[1]
  1. [1] Lebanon Valley College of Pennsylvania, Department of Chemistry
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 75, Nº 4 (April), 1998, págs. 465-466
• Idioma: inglés
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• Resumen

  • The benefits of laser spectroscopy in the undergraduate curriculum have been the focus of several recent articles in this journal. Raman spectroscopy has been of particular interest since the similarities of Raman to conventional infrared spectroscopy make the interpretation of spectral data well within undergraduate comprehension. In addition, the accessibility to this technology is now within the reach of most undergraduate institutions. This paper reports the development of an experiment using Raman spectroscopy which determines the authenticity of both diamonds and pearls. The resulting spectra provide an introduction to vibrational spectroscopy and can be used in a variety of laboratory courses ranging from introductory chemistry to instrumental analysis.