Sterling Silver Whitby Jet Toscana Overlapping Marquise Ring.  R525. Discover our stylish Toscana collection with this unique sterling silver ring. Simple and contemporary, it features a marquise shaped cabochon of the finest Whitby Jet set in a highly polished, abstract sterling silver frame.  All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform natural pieces of Whitby Jet into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: Cabochon approximately 9mm.