Iridescent ammonite fossil

1920 × 1080

Petrified Wood Logs — Brown

1600 × 1200

green and red mineral specimen

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Pyrite Crystals on Rock

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Layered Agate Rock

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Pyrite Mineral Cluster — Gray, Dramatic, Photograph

1828 × 1858

Pink Mineral Specimen

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fluorescent mineral under UV light

2048 × 1536

dark mineral fragments

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Fluorescent Crystals on Rock

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Red Crystals on Rock — Dramatic, Photograph

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Quartz Crystals on Rock

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