Sterling Silver and Whitby Jet Square Heart Necklace, P678. This petite feminine necklace is perfect for everyday wear. The item features an inlaid Whitby Jet heart design set within a square solid sterling silver frame. This necklace comes complete with an 18 inch sterling silver chain.  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 and in store. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.  Dimensions: 15mm x 15mm, Whitby Jet; 11mm x 12mm