Seems to have a protective coating that is worn in some places and will need tarnished removed periodically. This beautiful sterling silver hinged bangle is perfect for your child or loved one on special occasions like Christmas, birthdays, and Valentine's Day. The bangle has a lovely domed outer edge that lays flat against the skin and features a silver metal material with a protective coating to prevent wear. The bangle comes with a box closure and a safety chain to ensure it stays on securely. The item length is 6 inches, and it has been acid tested and certified as 925 sterling silver. This dainty piece is signed and has a tube chain type. It's a great addition to any jewelry collection and would make a perfect gift for someone special.