Sterling Silver Double Sided Seahorse Necklace Polished Silver Chain with Oxidized Charm Height 22 Millimeter (0.87 inch) Width 10 Millimeter (0.4 inch) Charm Weighs Approximately 1.1 grams (2.9 grams including 18" necklace) Thin Box Chain Thickness 0.7 Millimeters (1/32 Inch) Spring Clasp on Necklace