White Ice Sterling Silver Rhodium-Plated 18 Inch Diamond Heart Necklace With 2 Inch ExtenderMetal Type Sterling Silver Item Number QW437 18 Finish Polished Stone Type_1 Diamond Stone Quantity_1 1 Length of Item 20 in Stone Weight_1 0. 0105 ct Chain Length 18 in Chain Type Cable Chain Width 1. 25 mm Charm Element Length 9. 7 mm Charm Element Width 9. 7 mm Clasp Connector Lobster Clasp Thickness (Female end) 0. 71 mm Clasp Thickness (Male end) 1. 32 mm Clasp Width (Female end) 3. 51 mm Clasp Width (Male end) 3. 8 mm Extender Length 2 in