Landstrom'S Mt. Rushmore Black Hills Sterling Silver 12K Gold Accents Cross 18 Inch Spring Ring Clasp NecklaceMetal Type Sterling Silver Item Number QBH256 18 Finish Polished Length of Item 18 in Chain Length 18 in Chain Type Rope Chain Width 0. 87 mm Charm Element Length 25. 5 mm Charm Element Width 16. 07 mm Clasp Connector Spring Ring Clasp Thickness (Female end) 0. 79 mm Clasp Thickness (Male end) 1. 08 mm Clasp Width (Female end) 2. 89 mm Clasp Width (Male end) 5. 52 mm Feature Solid Manufacturing Process Casted Item Weight U M gm Width of Item 16. 07 mm