Seeing Under Water NecklaceThree polished brass rings (each measuring 10mm in diameter) on a 500mm sterling silver chain. Like all metals, both silver and brass develop a natural patina over time. Some people prefer this natural matt finish. However, if you prefer your jewellery bright and shiny, all products come packaged with care instructions and a special polishing cloth for maintaining both the colour and shine of the metals. Brand: A Bird Named Frank