Transparent dumortierite and sapphirine from Tunduru, Tanzania
Author(s) : -
Date : 2007
Transparent dumortierite and sapphirine from Tanzania. Published in Gems & Gemology, 2007.
Author(s): H.A. Haenni
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Transparent dumortierite and sapphirine from Tanzania. Published in Gems & Gemology, 2007.
Author(s): H.A. Haenni