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Sphaerolith: Dryhead (Detail)
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Sphaerolith: Dryhead (Detail)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Dryhead "flying dragon", Montana (USA)
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Sphaerolith: Dryhead, Montana (USA)
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Sphaerolith: Wingate Pass plume agate (aka Death Valley plume agate), CA
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap
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Sphaerolith: Lava Cap