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black and golden cyclic twinned crystal groups of Cassiterite sitting on white prismatic Quartz crystals
When people think of Emeralds
These specimens have been labeled as being Quartz after Baryte pseudomorphs but
South Africa and the Uchucchacua Mine in Peru
No damage on the top / display side of the piece
Tourmaline (multi-color, multi-terminated crystal group) Hyalite black and golden cyclic twinnedHere we have a wonderful old time Brazilian Tourmaline specimen dating back to the 1970s. This piece is from the collection of my father, Richard Kosnar (1946 2007), the namesake for the rare zirconium phosphate mineral, Kosnarite. In his early days as a dealer, he spent several years in Brazil importing gem crystals, but this piece stood out for its quality and obvious beauty, so he kept it for his personal collection. The specimen features a
