A locket is a pendant that opens to reveal a space used for storing a photograph or other small item such as a lock of hair.
Lockets are usually given to loved ones on holidays such as Valentine's Day and occasions such as christenings, weddings and, most noticeably during the Victorian Age, funerals.
They come in many shapes such as ovals, hearts, prisms and circles and are usually made of precious metals such as gold or silver befitting their status as decorative jewellery.
Another kind of locket still made was in a filigree style with a small cushion in the centre to which a few drops of perfume should be added.
Very rare World War I- and World War II-era British and American military uniform locket buttons exist, containing miniature working compasses.