Sterling Silver Whitby Jet Marcasite Round Floral Locket Necklace. P2150. This feminine locket features a highly polished cabochon of the finest Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is framed by a sterling silver locket, embellished with sparkling marcasite stones. The locket hangs from an 18 inch long fluid sterling 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 Derbyshire where a team of skilled craftsmen turn the raw Jet into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery and other Whitby Jet necklaces on our website.