Brooches by Kathie Murphy Pin is designed not to open right back but just enough to insert through material. Allows pin to be more secure should it come undone. Features Primary Material : resin Other Materials : silver and stainless steel Pin Type : pin Dimensions (mm) : 65x70 One of a Kind : Yes Hallmarked : No Cleaning Instructionsclean in warm soapy water and rinse then rub with small amount of baby oil on soft cloth