Tag : Zircon

Zircon – A very old gemstone

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Zircon – A very old gemstone. Published in Journal of Gemmological Association of Hong Kong GAHK, 2016, 37, 37-41.

Author(s): H.A. Haenni

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How to get the blues of the pink: detection of low temperature treatment of pink sapphires

Latest research on detection of low temperature treatment of pink sapphires. Presentation by Dr. Michael Krzemnicki of SSEF.

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Zircon ou zirconia à ne pas confondre

Zircon ou zirconia à ne pas confondre. Published in Journal Suisse d’horlogerie et de bijouterie, 1989.

Author(s): H.A. Haenni

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