Hematite is the mineral form of iron oxide. Hematite is harder than iron, but also more brittle. It ranges in color from black to silver-gray and brown to reddish-brown and red. Gray hematite is found in places with standing water such as mineral hot springs, or a lake or stream. In places without water, it usually occurs as a product of volcanic activity.
Raw hematite courtesy of Wikipedia
Hematite’s most popular time in jewelry was during the Victorian era in Europe.
Carved bear courtesy of Wikipedia
Huge deposits of hematite are found in banded iron formations. There’s a type of red hematite that’s used in traditional Swedish house paint.