A superb, large, well-crystallized plate of this very rare mineral with unusually big and super lustrous crystals. The Braunites are clustered on a matrix that also host some bright, glassy Calcite crystals and a few clusters of Andradite. This is simply the best specimen of this mineral I have seen for sale. Braunites reach .8CM size most of which are perfectly undamaged tho there is some chipping best noted with magnification. The overall quality and size for this rare specimen is simply extraordinary.
A world class specimen of this rare mineral! Big (up to 7 cm) Calcite crystals are the matrix for hundreds of sparkling, lustrous Jacobsite crystals. Jacobsite is rarely found much bigger than micro sized. The best come from the Kalahari and this has by far the best esthetics I have ever seen. Sharp, bright groups of silvery-black crystals are nicely scattered on the contrasting Calcite. The Calcite is in excellent condition and the dark Jacobsite can be clearly seen inside the crystals. Rare black minerals are reputed to be ugly, this is not!
Olmiite with Calcite
N Chwaning Mine, Kalahari Fields, Kuruman
9 x 6.8 x 6 CM (cabinet)
A large and esthetic 3-D cluster of Olmiite in "wet look" aggregates with a pinkish color. Far better that the average, this is an even more special specimen due to the well placed clear clusters of Calcites in parallel growth. The Calcite is in doubly terminated prisms that look very much like Quartz and have similar glassy luster. Olmiite was unknown as a mineral until 2006, it is only found at this one location worldwide. This piece displays well, is undamaged and presents from several angles.