Cassiterite ex crystallized specimens of Valentinite are

crystallized specimens of Valentinite are few and far between on the market

A few accenting blades of Ferberite and nearly micro Quartz crystals sit on the matrix to create this beautiful and three-dimensional display specimen

Better quality than the photos indicate

I have photographed the crystals under the microscope to show that they are truly terminated crystals and not just a blue mass

This find produced record setting Andorite and Potosiite specimens but also produced some of the finest Zinkenites ever found from any world locality

Cassiterite ex crystallized specimens of Valentinite areThis 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. Several great, sharp, semi lustrous, beautiful, well formed black and brown cyclic twinned crystals make for an appealing display piece. A slight brown color can be seen when