Sterling Silver Whitby Jet Heritage Rectangle Necklace. P2836. This striking necklace features a stunning rectangular shaped cabochon of the finest Whitby Jet stone, sourced directly from the north east coast of Yorkshire. The beautiful sterling silver pendant hangs gracefully from an elongated fixed bail on a fluid 18 inch long silver 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 natural pieces of Whitby Jet into these stylish 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: 18x9mm.