Dark and opaque. Slighty shiny. Rather boring, really.
The derivation of chromite comes from chromium, "a metallic element remarkable for the beautiful colour of its compounds", but not, obviously, this one!
Chromite is the only ore of chromium. Chromium is used to plate other metals (as chrome), since it is shiny and doesn't rust.
Chromite bricks are used to line blast furnaces, as they can resist extremely high temperatures.
