Sterling Silver Whitby Jet Marcasite Triangle Ring. R820. This elegant ring boasts a striking marquise shaped cabochon of the finest Whitby Jet stone, sourced directly from the north east coast of Yorkshire. The stone is placed within an exquisite sterling silver diamond setting that has been embellished by dazzling Marcasite stones, which bring a sophisticated sparkle to the piece. The ring is completed by a classic sterling silver band. All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural Whitby Jet stone 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: Whitby Jet: 15mm length, Face of Ring: 30x15mm width.