Sterling silver whitby jet toscana marquise twist ring r512 this striking ring is a part of our handmade toscana collection and features a stunning marquise shaped cabochon of highly polished whitby jet stone sourced directly from the north east coast of yorkshirethe stone has been placed within an exquisite sterling silver setting which compliments the black stone beautifully the ring is completed by a classic sterling silver band all our whitby jet jewellery is designed and crafted with