Sterling Silver Whitby Jet Dinky Cushion Necklace. P452. This classic, simple necklace is part of our handmade Heritage jewellery collection and features a hand shaped cabochon of fine Whitby Jet, sourced directly from the north east coast of Yorkshire. The gemstone is polished to perfection and set in solid sterling silver. This versatile necklace is sold complete with an 18 inch sterling silver chain which fastens with a classic bolt ring style 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 7mm x 7mm.