Cassiterite bi-color Some minor associated Galena can

Some minor associated Galena can be seen on the side of the piece as well

Specimen # BROOK31920

or rare inclusion gems

and despite their smaller size

Cassiterite bi-color Some minor associated Galena canCassiterite is rarely seen in faceted stones as the material if often not transparent enough to cut fine stones, plus it requires a skilled cutter to properly handle the brittle material. Bolivia has probably produced more Cassiterite ore than any country in the world. The large majority of the Cassiterite from Viloco is completely opaque and black. Rarely, gem quality crystals are found and those that escape the crusher are prized for their clarity.