18ct White Gold 0.49ct Ruby Diamond Cushion Ring. FEU-1319. This elegant 18ct white gold ring features a stunning bright red 0.49 carat ruby which is framed by brilliant cut white diamonds, totalling 0.25 carats. The luxurious precious gemstones are set in 18ct white gold and completed with a classic 18ct yellow gold band. At C W Sellors, we have an expert team of gemstone and diamond specialists who handpick and grade each jewel to meet our high standards and a team of talented in house designers who combine their talents to bring you our exclusive Precious Gemstone collection. You can find other ruby pieces online and in store to complement this ring. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.