This mineral looks like no other, for the sharp combination of geometry and color. A simply fine, beautiful example of this very rare mineral species in large crystals, featuring gemmy red zoning that has cuttable rough within (although that would be a tragedy, it could be cut!). It is known for its striking carmine-red color. As a dominant piece with geometry and color, this is hard to beat. Note: this is an old specimen and well preserved. It needs to be in AC, and not in a humid environment. Laszlo Kupi photo.
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