Cassiterite with Siderite

Item Description

Bolivia has probably produced more tin than any other country in the world. The great tin mines at Viloco (sometimes called Araca) have produced some of the most magnificent Cassiterite specimens extant. This particular specimen hosts many SUPERB quality, sharp, highly lustrous, black, cyclic twinned crystals up to 12 mm which are associated with tan "discs" of Siderite. Keep in mind that despite all of the thousands of tons of tin ore that are mined in Bolivia each year, Viloco is the only mine to produce gem quality crystals that are large enough and fine enough to facet stones. This piece is in great shape overall, and the fact that it shows color is a great bonus. This classic material from Viloco is simply not seen for sale in today's market. Valued at $700-$800 for the superb quality.