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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Tag : Tanzania
Uncommon minerals of gemstone quality from Tanzania
Author(s) : -
Date : 2006
Uncommon minerals of gemstone quality from Tanzania. Published in GIT Proceedings, 2006.
Author(s): H.A. Haenni
Rubine vom Burma-Typ aus der Gegend von Morogoro in Tansania
Author(s) : -
Date : 1991
Rubine vom Burma-Typ aus der Gegend von Morogoro in Tansania. Published in GZ, 1991.
Author(s): H.A. Haenni
On corundums from Umba, Tanzania
Author(s) : -
Date : 1987
On corundums from Umba, Tanzania. Published in Journal of Gemmology, 1987.
Author(s): H.A. Haenni
Korunde aus dem Umba-Tal, Tansania
Author(s) : -
Date : 1986
Korunde aus dem Umba-Tal, Tansania. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1986.
Author(s): H.A. Haenni