Silver whitby jet marquise oval centre twisted ring r752 this feminine sterling silver whitby jet and marcasite ringfeatures an ovalcabochonof whitby jet stone that has been sourced directly from the north east coast of yorkshire the striking stone issurrounded by glittering marcasite and framed by a beaded silver design all our whitby jet jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled craftsmen turn the raw whitby jet