Hematite
Hematite · Mineral Specimen and Decorative Stone
Crystal System
Trigonal, commonly found as massive, botryoidal, or tumbled rounded shapes
Mineral Group
Oxides
Chemical Formula
Fe2O3
Formation Process
Sedimentary, hydrothermal, and igneous processes, often precipitating from aqueous solutions or forming in metamorphic rocks
About This Crystal
A smooth, highly polished, tumbled stone with a reflective, metallic luster and a dark silvery-grey to iron-black color. It is completely opaque with a smooth, tactile surface showing no visible crystal facets due to tumbling.
Physical Characteristics
Metallic to submetallic luster, opaque, cherry-red to reddish-brown streak, no cleavage, uneven to sub-conchoidal fracture, specific gravity around 5.26, brittle tenacity, and non-magnetic in natural forms (though synthetic or processed simulants like magnetic hematite exist)
Optical Properties
Opaque with strong metallic reflection; singly refracting in thin sections under transmitted light, but typically observed via reflected light microscopy showing high reflectivity and weak anisotropy
Hardness & Durability
Origin Region
Worldwide, with significant deposits in Brazil, China, Australia, and the United States
Hardness & Durability
Mohs hardness of 5.5 to 6.5, moderate toughness, stable under normal conditions, susceptible to strong acids but generally durable for daily wear in jewelry if protected from hard impacts
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid harsh chemicals, ultrasonic cleaners, and prolonged exposure to moisture to prevent surface alteration
Rarity & Value
Common and widely available; low to moderate value depending on size and polish, with minimal treatments other than cutting and tumbling
Special Characteristics
Distinctive dark red streak despite its metallic silver appearance, high specific gravity (heavy for its size), and a mirror-like polish when tumbled
Lore & History
Historically used as an amulet for protection, grounding, and ancient cosmetic pigments (ochre). In modern crystal healing, it is associated with the root chakra, grounding energy, and mental clarity, though these are traditional beliefs and not scientifically proven