Sterling Silver Whitby Jet Marcasite Double Spiral Round Necklace. P2117. This striking necklace boasts a stunning round shaped Whitby Jet stone, sourced directly from the north east coast of Yorkshire. The stone is set within an enchanting sterling silver spiral design that is adorned with dazzling marcasite stone, bringing a sophisticated sparkle to the piece. The pendant hangs gracefully from a marcasite embellished bail on a delicate sterling silver 18 inch chain complete with a classic bolt ring clasp for easy wear. 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.