One polished brass combination Sacred Heart of Jesus and Immaculate Heart of Mary locket. Each locket is handmade with devotion and is very solid. The locket is approximately 20mm round (3/4 inch)--which is roughly about the size of a penny, and has a sturdy "double loop" ring to attach to a necklace. This locket is very unique and special and makes a really awesome gift! Feel free to contact me if you have any questions.