mineral

Hematite bead bracelet

Hematite (iron(III) oxide, Fe₂O₃), likely polished magnetic hematite or hematite-coated beads

AI-generated identification · may be incorrect

Dark gray to black, metallic/submetallic luster, opaque, Mohs hardness 5–6.5, trigonal crystal structure, no prominent cleavage, and specific gravity about 5.0–5.3; polished beads are typically very smooth and strongly reflective.

Identified August 27, 2026More mineral →

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Physical properties

Formation & geological history

Natural hematite forms by oxidation and precipitation in hydrothermal veins, banded iron formations, and sedimentary deposits, ranging from Precambrian to recent ages. Some jewelry sold as “hematite” is synthetic ferrite or hematite-coated material.

Uses & applications

Used as an iron ore, pigment, polishing abrasive, and ornamental stone; beads are popular in jewelry and often marketed for magnetic or grounding properties, though health claims are unsubstantiated.

Geological facts

A diagnostic streak test produces a reddish-brown to cherry-red streak, even when the specimen appears black. Hematite is weakly magnetic naturally; strongly magnetic beads may be synthetic magnetic hematite.

Field identification & locations

Common sources include Brazil, Australia, China, India, and the United States. Check the red-brown streak on unimportant material and test magnetism; bead form and coating make exact identification uncertain.