White Ice Sterling Silver Rhodium-plated 18 Inch Diamond Butterfly Necklace with 2 Inch ExtenderProduct Details Material; Primary Purity 925 Finish Polished Stone Type Diamond Stone Quantity 1 Length of Item 20 in Stone Weight 0. 01 ct Chain Length 18 in Chain Type Cable Chain Width 1. 25 mm Charm Element Length 10 mm Charm Element Width 10 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 Feature Solid