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Report on a new cobalt diffusion treatment of natural spinel, using analysis of inclusions, UV-Vis-NIR and EDXRF spectroscopy, and LA-ICP-MS.
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G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
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These red, pink and orange hued gems evoke passion and excitement – and are sure-fire accessories for sultry summer days.
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