Sterling Silver Three Dimensional Hippopotamus Hippo Necklace Polished Silver Chain with Oxidized Charm Charm Height 7 Millimeters (0.28 inch) x Width 13 Millimeters (0.51 inch) Charm Weighs Approximately 1.8 Grams (3.9 grams including 20" necklace) Box Chain Thickness 0.7 Millimeters (1/32 Inch) Spring Clasp on Necklace