This extraordinary specimen, known as a “Pyrite Sun”, is a natural geological wonder formed nearly 350 million years ago deep underground under immense pressure. These striking, disk-shaped crystal formations are unique to the coal mines of Sparta, Illinois, where they occur between seams of coal and are revealed only during mining.
While pyrite is a common mineral worldwide, the round, radiating disk form is virtually exclusive to Illinois, making these specimens highly prized among collectors. The metallic luster and intricate radiating pattern create a stunning display piece that reflects both geological rarity and natural artistry.
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Origin: Sparta, Illinois, U.S.A.
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Size: 105 × 93 × 7 mm
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Weight: 149 g
A remarkable addition to any mineral collection, this Pyrite Sun embodies the perfect blend of science, history, and beauty.