Platinum 1. 00ct Total weight round brilliant cut Diamond Full Adjustable Eternity Ring We are delighted to welcome a unique collection of stunning full eternity rings to Mappin & Webb. Truly timeless due to their exclusive craftsmanship, each ring can adjust by up to 3 ring sizes. This ensures the perfect fit always, as it features three ergonomic springs hidden from view on the inside of the band. Available here at Mappin & Webb in platinum, each full eternity ring harnesses between 1 to 2ct of scintillating round brilliant-cut diamonds. Crafted to evolve with you, your lifestyle, and your milestones.