What is a necklace with a photo inside called?

A necklace with a photo inside is called a locket. When they first became popular during the Victorian age, lockets often served as mourning jewelry, with wearers tucking locks of hair or miniature portraits of departed loved ones inside of hinged pendants. Some people continue this tradition today, though lockets can also be used to hold photos of living relatives and romantic partners. Shop a selection of lockets on 1stDibs.