Brooches by Kathie Murphy Brooch pin is designed NOT to open right out for safety but steel pin has good flexibility to allow through fabric. Features Primary Material : Polyester resin and white metal Other Materials : sprung stainless steel Pin Type : pin Dimensions (mm) : 50x50x5 One of a Kind : Yes Hallmarked : No Cleaning Instructionsuse baby oil to bring back colours if it looks dull. can be cleaned in silver dip.