Copper
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The ArkenstoneFeatured
A stunning, sharp copper crystal, with machine-like precision and perfection. This is a spinel twin, from a famous find of these in the 1980s. It is sharp, balanced, and a perfect fine thumbnail of competitive quality.
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Mineral guide
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native copper with spinel-twinned crystals and arborescences; notable from Lake Superior, Itauz, Dongchuan, Corocoro, prized for color and localities.Regional guide
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