18ct yellow gold whitby jet 003ct diamond size m cross heart necklace p2653 this elegant necklace is part of our cross heart collection it features a medium sized hand carved heart shaped whitby jet stone that has been sourced directly from the north east coast of yorkshire the individual highly polished whitby jethas been framed within a 18ct yellow gold 003ct diamond mount that embraces the gemstonein a cross design itsits gracefully on a 18 18ct yellow goldchain completed by a cla