The Science Museum of Minnesota
Fossil Coral, Quartz, and Unakite Necklace
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This necklace features polished fossil coral, quartz, and unakite, set with sterling silver components. Each stone illustrates a different aspect of geological formation: fossil coral preserves ancient marine life, quartz is a widely occurring crystalline mineral, and unakite is a metamorphic rock composed of green epidote, pink feldspar, and quartz.
Details:
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Material: Fossil coral, natural quartz, unakite, and sterling silver
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Appearance: Textured fossil coral paired with clear or lightly colored quartz and green-and-pink unakite
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Formation: Fossil coral forms as silica replaces coral skeletons; quartz crystallizes from silica-rich fluids; unakite forms from metamorphism of feldspar-rich rocks with epidote
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Physical Properties: Quartz and unakite hardness ~6.5–7; fossil coral ~6.5–7
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Educational Value: Demonstrates fossilization, mineral crystallization, and metamorphic rock formation
This sterling silver fossil coral, quartz, and unakite necklace combines natural history and mineral science, creating a visually appealing and educational piece.

