Hematite
Hematite · Mineral Specimen and Semi-Precious Gemstone
Crystal System
Trigonal, commonly found as massive, botryoidal, tabular, or tumbled stones.
Mineral Group
Oxides
Chemical Formula
Fe2O3
Formation Process
Forms via hydrothermal veins, sedimentary processes, and as an accessory mineral in igneous and metamorphic rocks.
About This Crystal
A dark grey to metallic silver-black tumbled stone with a smooth, polished surface and high sub-metallic to metallic luster, completely opaque.
Physical Characteristics
Color is steel-gray to black with a distinctive reddish-brown streak, uneven to subconchoidal fracture, no true cleavage, specific gravity of approximately 5.3.
Optical Properties
Opaque with a metallic to sub-metallic luster, uniaxial negative optical character.
Hardness & Durability
Origin Region
Found globally with major deposits in Brazil, China, Australia, and the United States.
Hardness & Durability
Mohs hardness of 5.5 to 6.5, brittle tenacity, moderate durability suitable for careful jewelry use.
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid harsh chemicals, prolonged water exposure to prevent rusting, and ultrasonic cleaners.
Rarity & Value
Common and widely available, with very affordable pricing for tumbled and polished specimens.
Special Characteristics
Known for its heavy feel relative to size and its distinctive reddish-brown streak despite its metallic grey exterior.
Lore & History
Historically used as an amulet for protection and grounding in ancient civilizations like the Egyptians; associated with the root chakra in modern crystal healing.