Eternity rings and promise rings both symbolise love and commitment—the main difference is when they are given, and who they are given to. While an eternity ring is usually gifted after several years of marriage, a promise ring can represent other relationships in your life, such as a friendship, romance or a familial bond.   A promise ring can be given on a number of occasions—as a birthday present, at Christmas or as a graduation gift—to showcase your adoration of a friend, family member or significant other. It can also be a tangible promise of your intention to one day marry your partner.   An eternity ring—like a yellow gold or white gold diamond eternity ring—is traditionally given to a partner after marriage or to mark an important milestone, including a wedding anniversary or the birth of a first child.