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01/05/2015

Heat-treatment of spinel

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Authors: Adolf Peretti, Ngwe Lin Tun, Thomas Armbruster
Published in: Contributions to Gemmology No. 11

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GRS Gemresearch Swisslab

2 days ago

Many thanks to all participants of our seminar that was held today at the Hong Kong Jewellery Show.

The event with the title "New ‘Kashmir-type’ sapphires from Madagascar and how to distinguish them from their Indian counterparts" was divided into a Gemology part, a practical hands-on section and a scientific report about the formation of Kashmir sapphires.

Click here to read our latest article about the topic published in InColor -> goo.gl/gy3Lfe ... See MoreSee Less

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