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RM1937   Topaz

Topaz Mountain, Thomas Range, Juab, Utah, United States

Topaz crystal aesthetically disposed on a rhyolite matrix. It shows several faces very well defined, with an excellent transparency and a uniform tone. From a classic locality.

 


Size: 7.5 x 8 x 5.5 cm.
Main crystal: 18 mm.

 

RM805   Bixbyite

Topaz Mountain, Thomas Range, Juab, Utah, United States

A brilliant and very sharp bixbyite crystal. A manganese oxyde well-known and appreciated by collector for its rich crystallographic forms. In this specimen we can see the cubic main form with vertex truncated by trapezohedron and a small triangular octahedron face. A crystallographic pleasure... Very aesthetically disposed on a volcanic rocky matrix. With an old display label.


Size: 4,5 x 4,0 x 3,7 cm.
Main crystal: 6 x 5 mm.



 
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