Sterling Silver One Sided Ocean Nautical Starfish Necklace High Polished Chain with Oxidized Charm Height 21 millimeters (0.83 inch) x Width 21 millimeters (0.83 inch) Charm Weighs Approximately 2.1 grams (3.7 grams including 16" necklace) Chain Thickness 0.7 millimeters (1/32 inches) Spring Clasp on Necklace