Black Onyx worry stone. A great piece to carry with you and pull out during difficult times. A grounding stone that may assist with decision making, physical traumas, grief, and worries. Rub this worry stone between your fingers to absorb its energetic healing properties. Black Onyx is primarily black but may have bands of white, brown, red, yellow, tans, or blue. Sizes range from 1 1/4″ to 2″ and may vary slightly.