Our marquise diamond engagement rings are steeped in history. The marquise diamond was crafted when King Louis XV of France commissioned a new diamond shape and this is the elliptical shape that we know today. Marquise diamonds are cut to exploit their carat weight to deliver a superior and expensive looking stone as well as make the finger look more slender. Choose your marquise engagement ring from a wide selection of styles and metals and a 30 day money back guarantee and free delivery. Don't forget that we have a bespoke design service.