"Bismuth is a naturally occuring element. The crystals are formed in the smelter as the natural bismuth is being processed. As the crystal interacts with the air, it takes on a spectacular rainbow-hued and iridescent quality. The crystal is angularly stacked in an unusual pyramid form and, with its amazing colors, makes them an exceptional addition to any collection of fine minerals. These crystals are approximately 1" in length and have an average weight of 6 grams."
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