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Your search keyword '"Sangsawong, Supharart"' showing total 2 results
Start Over Author "Sangsawong, Supharart" Topic gems & precious stones
2 results on '"Sangsawong, Supharart"'

1. COLORED STONES AND ORGANIC MATERIALS.

Author

Pardieu, Vincent, Vertriest, Wim, Sangsawong, Supharart, Raynaud, Victoria, Behnke, Russell E., Saeseaw, Sudarat, Khowpong, Charuwan, Atikarnsakul, Ungkhana, Engniwat, Sasithorn, Ziyin Sun, and Muyal, Jonathan

Subjects
*GEMOLOGY, *AMAZONITE, *GEMS & precious stones, *GEMOLOGISTS, *SAPPHIRES
Abstract

The article offers world gemmology news briefs as of September 2016. The discovery of amazonite, jadeite, topazolite, demantoid, and labradorite has demonstrated the importance of systematic research of the Mexican subsoil. A team of Gemological Institute of America (GIA) field gemologists visited Tanzanian mines to collect ruby and sapphire for reference collection. A yellow sapphire from Thailand has also showed a spectrum associated with high-temperature heat treatment of blue sapphire.

Published
2016

2. Gem News International.

Author

Giuliani, Gaston, Boiron, Marie-Christine, Morlot, Christophe, Raoul, Julien, Chatagnier, Pierre-Yves, Vertriest, Wim, Detroyat, Stanislas, Sangsawong, Supharart, Raynaud, Victoria, Pardieu, Vincent, Ostrooumov, Mikhail, Renfro, Nathan, Tai-An Lai, Larry, Tao Hsu, Shigley, James E., Dirlam, Dona M., Lucas, Andrew, and Muyal, Jonathan

Subjects
*GEMS & precious stones, *GEMOLOGY, *GARNET, *ANDRADITE, *MINERALS
Abstract

The aticle offers updates concerning gems and gemology from around the world as of December 2015. These include the discovery of demantoid garnet with giant fluid inclusion, the discovery of gem-quality grandidierite from Madagascar, and the recognition of the andradite varieties melanite, topazolite and demantoid.

Published
2015

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