Spinel
Unknown Owner
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A sharp, euhedral, lustrous, indigo-blue, 1.2 x 1.1 cm, spinel crystal jauntily perched on contrasting off-white matrix from the Crazy Sphinx Mine in Helena, Montana. This is a highly representative and uncommon specimen from this locality, even with some (minimal but present) termination damage. Ex Bart Cannon Collection.
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Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2024 | Unknown Owner | Not disclosed |
| — | The Arkenstone | Not disclosed |
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Mineral guide
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, color range from ruby red to cobalt blue, sharp octahedral form, hardness 8, rare gemmy crystals on marble, prized by collectors for rarity and luster.Regional guide
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