Bronzite

Bronzite is a rock-forming group of mineral. The mineral has been chemically "weathered." over eons to produce the unique bronze effect. This creates a new, opaque stone with a sub metallic luster, especially on its cleavage surfaces. Weathering occurs due to moisture and temperature conditions within the rock or meteorite where the stone is found.

 Bronzite often contains inclusions of highly reflective minerals, such as hematite and goethite, which give it a beautiful bronze like effect when polished (hence its name). Some beads also exhibit a cat's-eye effect. Bronzite ranges from greenish-black to brown and has medium hardness. The stone is found in Austria, South Africa, and the U.S.A. (Montana).