18ct Yellow Gold Whitby Jet 0.03ct Diamond Medium Cross Heart Charm. G774. This romantic charm features a stunning heart shaped cabochon of the finest Whitby Jet stone, sourced directly from the north east coast of Yorkshire. The beautiful 18ct yellow gold frame is embellished by a dazzling brilliant cut diamond. Attach the charm using the lobster clasp fastening. 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 compliment this charm. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection.