Pyrite
Pyrite · Mineral Specimen
Crystal System
Cubic, often forming cubes, pyritohedrons, and octahedral crystals, or massive clusters
Mineral Group
Sulfides
Chemical Formula
FeS2
Formation Process
Hydrothermal veins, sedimentary rocks, and metamorphic deposits under a wide range of temperatures
About This Crystal
The specimen features a metallic, brass-yellow cluster with a high reflective luster, commonly known as Fool's Gold, showing granular crystalline aggregates with minor matrix attachments.
Physical Characteristics
Brass-yellow body color, greenish-black streak, cubic crystal system, indistinct cleavage, conchoidal to uneven fracture, specific gravity of approximately 5.0, brittle tenacity, and metallic luster.
Optical Properties
Opaque with a strong metallic luster, highly reflective, isotropic in reflected light.
Hardness & Durability
Origin Region
Spain, Peru, Italy, USA, China
Hardness & Durability
Mohs hardness of 6 to 6.5, brittle toughness, sensitive to moisture which can cause oxidation and tarnishing.
Care & Maintenance
Clean with a dry cloth or soft brush, avoid water and harsh chemicals to prevent rusting and degradation.
Rarity & Value
Common mineral worldwide, affordable price range for standard mineral specimens, treatments are rare as it is abundant in natural form.
Special Characteristics
Striations often visible on crystal faces, sparks when struck against steel due to high hardness and iron content, can exhibit weak thermoelectric properties.
Lore & History
Historically used to strike fire in ancient times, associated with abundance, vitality, and protection in modern crystal healing traditions linked to the Solar Plexus chakra.