A memoire ring records every unique experience of the owner, which should be kept alive in the memory. The ring band of a memoire ring is set all around with precious stones of the same size. It is not unusual that on some models the diamond lining is restricted to the top of the ring bar. These are often called half-memoire rings.
Memoire rings are also often used as wedding rings. Since the new marriage should last into infinity, it is common to change the name to Eternity Ring.