Sterling Silver Three Dimensional Trumpet Necklace Polished Silver Chain with Oxidized Charm Height 19 Millimeter (3/4 inch) Width 9 Millimeter (23/64 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