Glittering Stones >> Semi Precious Stones >> Hematite

Semi Precious Stone Hematite

Hematite (AE) or hematite (BE) is the form mineral of Iron (III) oxide, (Fe2O3), one of several iron oxides. The ore sometimes contains slight amounts of titanium also. When shaped into ornaments, it is often known as black diamond.

Hematite (kidney ore) from Michigan Hematite is a very common mineral, colored black to steel and silver-gray, brown to reddish brown, and even red. It is mined as the main ore of iron. Varieties include Bloodstone, Iron Rose, Kidney Ore, Martine, Paint Ore, Specula rite (Secular Hematite), Rainbow Hematite and also Titano-hematite. While the forms of hematite vary, they all have a very rust-red streak. Hematite is harder than pure iron, but much more brittle.

Historical Facts of Hematite

Chemical Composition: Iron(III) oxide, Fe2O3, a-Fe2O3

Mohs Scale Hardness: 5.5 - 6.5

Refractive index: Opaque

Luster: Metallic to splendent

Crystal system: Hexagonal

Color: Metallic grey to earthy red tones

Occurrence: England, Mexico, Brazil, Australia, United States, Canada

Gemstone Hematite Jewelry