Heart Shaped Back Plate for Floating Locket Goes Inside Glass Locket Necklace Pendant Jewelry Key Chains - Ma Mama Mom Mum Mother Madre - Stainless Steel Floating Plate - Grey Silver with Black Writing - Fits inside small tilted irregular shaped heart lockets - Goes on the back, and then you can fill the locket with birthstones of your children. Does not include a locket or anything else - this listing is just for a single flat locket plate that will go inside your own jewelry. It measures 3/4 of an inch wide (19mm wide) and 11/16 of an inch tall (16mm tall). It is very small, like a dime or penny.