Silver whitby jet blue john double sided stone flip ring r1043 this sleek and contemporary two stoned flip ring features highly polished hand carved whitby jet on one faceand on the reverse side a unique piece of derbyshire blue john all set into a simple sterling silver frame simply rotate the frame for a different look this ring would make the perfect addition to any gemstone lovers collection all our whitby jet jewellery is designed and crafted within our very own workshops in derbys