The Science Museum of Minnesota
Watermelon Tourmaline Stud Earrings
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These stud earrings feature slices of natural watermelon tourmaline set in sterling silver. Watermelon tourmaline is a bicolor variety of tourmaline, typically displaying pink centers and green outer rims, formed through changes in chemical composition during crystal growth.
Details:
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Material: Natural watermelon tourmaline set in sterling silver
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Appearance: Pink and green bicolor stones, polished for clarity
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Formation: Forms in granitic pegmatites; color zoning occurs as trace-element concentrations change during crystal growth
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Physical Properties: Mohs hardness 7–7.5; vitreous luster
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Educational Value: Demonstrates crystal growth, trace-element effects on mineral color, and bicolor zoning
These sterling silver watermelon tourmaline stud earrings combine vibrant geological features with simple, elegant design.

