mineral

Polished hematite bead necklace

Hematite (iron(III) oxide, Fe₂O₃), likely polished beads

AI-generated identification · may be incorrect

Metallic to submetallic luster; opaque dark gray to black, with a reddish-brown streak. Mohs hardness 5–6.5, trigonal crystal system, no prominent cleavage, and specific gravity about 5.0–5.3; beads are shaped and highly polished.

Identified August 13, 2026More mineral →

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Physical properties

Formation & geological history

Hematite forms through oxidation of iron-rich fluids, sedimentary deposition, hydrothermal activity, or weathering. Deposits range from Precambrian banded-iron formations to younger vein and soil accumulations.

Uses & applications

Used as an iron ore, pigment, polishing powder, and ornamental stone; polished beads are inexpensive jewelry and metaphysical collectibles.

Geological facts

Despite its steel-gray appearance, hematite produces a distinctive red to reddish-brown streak on unglazed porcelain. Some jewelry sold as “magnetic hematite” is actually synthetic ferrite or magnetite.

Field identification & locations

Common sources include Brazil, Australia, China, India, and the United States. Test an inconspicuous area with a streak plate; genuine hematite should not strongly attract a magnet and leaves a red streak.