9mm 1ctw Sterling Silver BLUE Simulated SAPPHIRE MARQUIS OVAL CELTIC KNOT Ring 5-10 METAL: .925 STERLING SIVLER STYLE: BLUE SAPPHIRE SEPTEMBER MARQUIS Birthstone CELTIC KNOT FIT: VERY COMFORTABLE FACE WIDTH: 9MM (1CTW) / BAND WIDTH: 2MM A MUST HAVE FOR ANY SCOTTISH CELTIC COLLECTON!