QTY 1 Metal: Brass Plating: Silver and Palladium and Rhodium, 3 LAYERS plating, NOT EASY TO FADE. Opal: Lab Created Blue Fire Opal Color: Silver Chain: FREE Size: Length: 22mm/0.87inch (Including Buckle), Width: 18mm/0.71inchChain Size: 18 inches. Two sizes available. To see 1/2 inch size, please see third photo.