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http://dx.doi.org/10.4191/kcers.2012.49.6.493

Identification for the Vivid Yellow Diamonds  

Song, Jeongho (Department of Materials Science and Engineering, University of Seoul)
Yun, Yury (Department of Materials Science and Engineering, University of Seoul)
Song, Ohsung (Department of Materials Science and Engineering, University of Seoul)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.6, 2012 , pp. 493-497 More about this Journal
Abstract
We propose a new reliable, fast, and low cost identification method for similarly looking 0.3ct vivid yellow color of natural, HPHT treated, and synthesized diamonds. Conventional optical microscopy as well as low temperature PL(photoluminescence), FT-IR, UV-VIS-NIR, micro-Raman spectroscopy, and vibrating sample magnetometry(VSM) characterization were executed. We could not distinguish the natural diamonds from the treated or the synthesized stones with an optical microscopy, PL, FT-IR, and UV-VIS-NIR spectroscopy. However, we could identify the treated diamond with micro-Raman spectroscopy due to unique $1440cm^{-1}$ peak appearance. VSM revealed easily the synthesized diamond because of its ferromagnetic behavior. Our preliminary propose on employing the Micro-Raman spectroscopy and VSM might be suitable for identification of the similar looking vivid yellow colored diamonds.
Keywords
Vivid yellow diamond; HPHT Treated; Synthetic; VSM; Raman spectroscopy;
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