Sterling Silver Whitby Jet Marcasite Large Heart Locket Necklace. P2149. This romantic, vintage style pendant features a highly polished heart shaped piece of the finest Whitby Jet stone which has been sourced directly from the north east coast of Yorkshire. The stone is set within the centre of a sterling silver heart locket that has been embellished with dazzling marcasite stones, giving the piece a gorgeous, sophisticated sparkle. Sold complete with an 18 inch sterling silver chain which fastens with a classic bolt ring style clasp. 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 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: Drop including bail: 39mm, locket 26mm x 26mm.