Both anniversary rings and eternity rings are a treasured way to show your loved one how much they mean to you. While anniversary rings are often used to celebrate a significant milestone like a first, fifth, 10th, 25th, or 50th anniversary, an eternity ring can be gifted at any time. An eternity ring symbolizes your everlasting love, and often features a ring of diamonds all the way around the band. Many couples choose this style of ring as their wedding ring.