18ct White Gold Whitby Jet 0.30ct Diamond Twist Shank Ring, R891. This exquisite ring features a stunning circular shaped cabochon of the finest Whitby Jet stone, sourced directly from the North East coast of Yorkshire. The beautiful 18ct white gold frame is embellished by dazzling 0.30cts of brilliant cut diamonds.  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 Jet 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.  Dimensions Whitby Jet; 4mm x 4mm