Cassiterite bi-color Specimen # BOL711B129

Specimen # BOL711B129

or rare inclusion gems

This piece has not been dyed or altered in any way

outside of the base of the crystal where it detached from the pocket wall

Specimen # BROOK31920

Cassiterite bi-color Specimen # BOL711B129Cassiterite 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.