A three stone engagement ring, also known as a trilogy ring, features three diamonds set in a delicate metal band. Each diamond represents a couple's past, present, and future, and is available in a range of precious metals and diamond shapes. You can even personalise your diamonds by customising the diamond carat, cut, colour, and clarity. Take a look through our collection below or create a completely new ring with our bespoke design service. Get free delivery and a lifetime warranty with your order.