Bournonite (“cogwheels”)

Brian Kosnar Mineral Classics Verified independent store

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A hard to find "cogwheel" group of sharp, thick, blocky modified twinned crystals of Bournonite with excellent metallic luster. The piece displays well from a few angles. The stack ed appearance of the crystals, combined with the bright luster, makes this one of the more eye-catching smaller Bournonites available. Specimen # BOL711B23 Show more