Cassiterite (GEM quality!)A very impressive and certainly hard to find GEM quality Cassiterite specimen from the famous Viloco Mine. This locality bears the unique distinction of producing the only GEM quality (facet grade) Cassiterites from any mine in Bolivia. Considering the millions of tons of tin ore that Bolivia has yielded, the fact that only one mine ever produced transparent Cassiterite is remarkable. A fine, sharp, lustrous, beautiful, well formed cyclic twinned

It is an attractive

Specimen # BROOK31919

Dave Bergman

The piece is notably gemmy / transparent and really looks good with a bit of backlighting to see in the insect inclusions

The crystals are virtually damage free

and this is one of only a few pieces that I have ever had to offer

colorful minerals

they are wonderful unique and interesting specimens

I will say that this is certainly one of the more aesthetic crystal groups from this find

Bandy described

The terminations on the above specimen are very sharp and lustrous

attractive and well-formed as the Bolivian specimens