If you’re looking for an engagement ring that will stand the test of time, this 1ct round diamond solitaire ring from De Beers' Classic collection is perfection. The 2.1mm wide platinum band has a four-prong setting that elevates the diamond up to the light to maximise its brilliance. A round brilliant cut is the perfect choice for engagement ring diamond as it gives the best spread on the hand for its size. The De Beers Classic Solitaire is available in a wide selection of colour and clarity grades, with centre diamonds ranging in weight from 0.20ct to 2.49ct. This De Beers Classic 1ct diamond engagement ring is priced from £7,600.