Sterling Silver One Sided Manatee Sea Cow Necklace Polished Silver Chain with Oxidized Charm Height 24 Millimeter (0.95 inch) x Width 10 Millimeter (0.4 inch) Charm Weighs Approximately 1.8 Grams (3.6 grams including 18" necklace) Thin Box Chain Thickness 0.7 Millimeters (1/32 Inch) Spring Clasp on Necklace