Rare Crystal. Metallic Rutile Eightling Cyclic Twin Crystal Tiny Mineral Specimen, arrives in acrylic gem jar. From the Clyde Hardin Estate Mineral Collection. Very sharp.
Dimensions (millimeters): 10 x 7 (tiny gemstone)
Dimensions (inches): .4 x .28 (small thumbnail specimen)
Origins: Perovskite Hill, Magnet Cove, Arkansas, USA
Field collected by Mr. Clyde Hardin, the renowned expert in Magnet Cove digging.
Black mineral composed of titanium dioxide. Titanium dioxide occurs in three well known minerals - rutile, the most common but also anatase and the rarest of the three - brookite. Of course since all three minerals have the same chemistry they occur in different crystal systems.
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