Rosell Minerales
RM1937 Topaz
Topaz Mountain, Thomas Range, Juab, Utah, United StatesTopaz 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.
RM890 Topaz on Rhyolite
The Cove (Topaz Valley), Thomas Range, Juab Co., Utah, United StatesA huge size topaz crystal well disposed on the rhyolite matrix. It shows well defined faces and edges, excellent transparency and uniform toasted honey tone. It shows natural cleavage planes. A gem from a classic locality.
Size: 7.7 x 6.5 x 5.8 cm.
Main crystal: 38 x 8 mm.
RM805 Bixbyite
Topaz Mountain, Thomas Range, Juab, Utah, United StatesA 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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