Tag : Dumortierite

Some uncommon sapphire “imitations”: Blue Co-zirconia, kyanite and blue dumortierite

Some uncommon sapphire “imitations”: Blue Co-zirconia, kyanite and blue dumortierite. Published in Journal of the Gemmological Association of Hong Kong GAHK, 34, 62-64

Author(s): M.S. Krzemnicki

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Transparent dumortierite and sapphirine from Tunduru, Tanzania

Transparent dumortierite and sapphirine from  Tanzania. Published in Gems & Gemology, 2007.

Author(s): H.A. Haenni

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