Black Onyx is a beautiful form of Chalcedony that exudes sophistication, confidence, and authority. In fact it is reputed that Onyx helped to give courage to Roman soldiers. It's strong dark color is a perfect setting for a dramatic background for gems whose color are brilliant, or it can easily stand alone and make a statement on anyone who wears it. Black Onyx is found in a few places including: Brazil, Madagascar, Uruguay, and The United States.