Brilliant Gemstones Sterling Silver With 14K Accent Rhodium-Plated Green Quartz And Diamond 18 Inch Necklace With 2 Inch ExtenderMetal Type Sterling Silver Item Number QG2714 17 Finish Polished Stone Type_1 Prasiolite Stone Type_2 Diamond Stone Color_1 Green Stone Color_2 Clear Stone Quantity_1 1 Length of Item 20 in Stone Weight_1 1. 91 ct Stone Weight_2 0. 030 ctw (total weight) Chain Length 18 in Chain Type Cable Chain Width 1. 5 mm Charm Element Length 10 mm Charm Element Width 7 mm Clasp Connector Lobster Clasp Width (Male end) 4 mm Extender Length 2 in Feature Solid