This genuine, polished Madagascan blue chalcedony agate, also known as orca stone, boasts high quality with striking white to gray, grayish-blue to nearly black color patterns. It has been expertly polished to a smooth, mirror-like finish, making it a must-have for any collector or industry professional. Chalcedony is a nurturing stone that promotes brotherhood and goodwill. It absorbs negative energy. It brings the mind, body, emotions, and spirit into harmony. Chalcedony instills feelings of benevolence and generosity. It alleviates hostility and transforms melancholy into joy.