Cassiterite

Unknown Owner

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A very RARE and EXCELLENT thumbnail of a splendent, twinned, black cassiterite crystal from a MOST UNCOMMON worldwide locality - Busoro, Rwanda. The crystals, terminations and twinning plane are extremely sharp and the trivial bruising on the terminations is certainly not a detraction on this very showy piece from a RARE locality. Very seldom available. Ex. Carl Davis Collection.