Pyrite $64.99

This large pyrite specimen showcases the metallic luster and brassy-gold color that have earned it the nickname "fool’s gold." Its crystalline structure makes it an excellent example of natural mineral geometry.

Details:

• Mineral Group: Sulfide
• Chemical Formula: FeS₂ (iron sulfide)
• Size: Approximately 4–5 inches long
• Appearance: Metallic, golden surface with cubic or clustered crystal formations
• Formation: Commonly forms in hydrothermal veins, sedimentary deposits, and metamorphic rocks
• Physical Properties: Mohs hardness 6–6.5; metallic luster; brittle with a greenish-black streak
• Educational Value: Demonstrates crystal habit, sulfide mineralogy, and the role of iron compounds in Earth’s geology

This pyrite specimen is a substantial and visually striking piece that highlights both the beauty and scientific importance of mineral formation.