Necklaces / Pendants by Kathie Murphy Striking blue/green disc necklace made from polyester resin with silver links. Features Primary Material : polyester resin and white metal Length (inches) : 21 One of a Kind : Yes Hallmarked : No Cleaning Instructionsnecklace can be dipped in silver dip to clean silver parts. wash thoroughly in warm water and once dry rub resin beads with soft cloth and a little baby oil.