Sterling Silver Whitby Jet Toscana Marquise Twist Ring. R512. Part of our handmade Toscana collection, this contemporary ring features a striking marquise shaped cabochon of highly polished Whitby Jet stone presented on a sterling silver band with twisted shoulder detailing. 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: 20mm x 7mm.