Sterling Silver Double Sided Saxophone Instrument Necklace Oxidized Sterling Silver Charm 21 Millimeter x 16 Millimeter (0.83 inch x 0.63 inch) Charm Weighs Approximately 1.8 grams (3.6 grams including 18" necklace) High Polished Box Chain Thickness Approximately 0.7 millimeters (1/32 inch) Spring Clasp on Necklace