If you’re purchasing an eternity ring to give to someone special, you’ll want them to be able to wear it for a lifetime - and be able to pass it down to future generations. In that case, you should consider a 9 carat eternity ring, suitable for wearing every day. 9 carat eternity rings are a popular choice, and are often stronger than 18 carat rings. They contain 37.5% pure gold mixed with other metals for strength. You’ll see a range of 9k eternity rings below, and will certainly be able to find one that suits the style, size and budget you’re looking for.