Sterling Silver Whitby Jet Marquise Centre Open Necklace, P3512. This stunning necklace features a classic marquise shaped Whitby Jet gemstone set in an open sterling silver frame, sourced directly from the North East coastline of Yorkshire. Complete on an 18 inch sterling silver chain with a classic bolt ring style clasp, this necklace is the perfect gift for any occasion.  All our Whitby Jet jewellery is designed and crafted within our very own workshop, 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: Full Drop; 30mm x 14mm, Whitby Jet; 16mm x 9mm