Whitby jet bracelet oblong marcasite silver b878 this simple but stunning bracelet boasts a delicate oblong shaped piece of fine whitby jet stone that has been sourced directly from the north east coast of yorkshire the whtiby jetstone is set on a delicate sterling silver square linked chain that is embellished with exquisite marcasite stone for a sparkly finish all our whitby jet jewellery is designed and crafted within our very own workshops in derbyshire where a team of skilled craftsmen