Experiment with design details that make up a SARAH & SEBASTIAN Engagement Ring. The Trilogy Oval Half Moon Engagement Ring features an oval diamond alongside two complementing shoulder stones. All elements of this ring including band style, metal, carat and colour can be made bespoke as per your budget and request.  From price is based on a main 0.50ct, F colour and VS2 clarity diamond on a 18 karat gold band.