Round Pendant Black Onyx Sterling Silver 11mm (1-Piece) Onyx is said to eliminate apathy, stress, negative thinking, and help with public speaking. These Black Onyx Pendants are faceted on the front and back sides and have a soldered jump ring attached. Specifications ,Size: 11 mm ,Jump Ring Size: 6mm ,Color: Black ,Material: Onyx ,Shape: Round ,Country of Origin: India