mineral

Polished hematite (likely a hematite cabochon or tumbled stone)

Hematite, α-Fe₂O₃

AI-generated identification · may be incorrect

Small, smooth, dark steel-gray to reddish-brown stone with metallic luster; Mohs hardness 5–6.5, trigonal crystal structure, no prominent cleavage, and specific gravity about 5.3; appearance alone cannot confirm the identification.

Identified October 8, 2026More mineral →

Explore Polished hematite (likely a hematite cabochon or tumbled stone) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms through oxidation of iron-rich minerals and precipitation from iron-bearing water, as well as in sedimentary iron formations and hydrothermal or metamorphic settings. Hematite occurs from ancient Precambrian deposits to modern environments.

Uses & applications

Polished hematite is used for jewelry and ornaments; hematite is also an important iron ore and pigment source.

Geological facts

Its reddish streak is a key diagnostic trait and contrasts with its often steel-gray exterior.

Field identification & locations

Check for a reddish-brown streak on unglazed porcelain and unusually high heft; common deposits include Brazil, Australia, South Africa, and the Lake Superior region. The image does not show enough detail to verify the material.