Sterling Silver Whitby Jet Marcasite Double Row Stone Necklace. P2133. This stylish necklace features a highly polished marquise shaped cabochon of fine Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone has been placed within a vintage sterling silver setting embellished by two layers of marcasite stones, giving an elegant and sparkly finish to the piece. The pendant hangs gracefully from a fluid 18 inch long sterling silver chain completed by a classic bolt ring clasp for easy wear. All our Whitby Jet jewellery is designed and crafted within our very own workshops in Derbyshire where a team of skilled craftsmen transform the natural 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: 31mm x 15mm plus a 5mm bail, Whitby Jet: 16mm x 5mm.