Sterling Silver Whitby Jet and Marcasite 5 Stone Swirl Necklace. N994. This exquisite necklace boasts five stunning circular shaped cabochons of the finest Whitby Jet stone, sourced directly from the north east coast of Yorkshire. The stones are framed by exquisite sterling silver swirl settings embellished by dazzling marcasite stones, bringing an elegant sparkle to the piece. The design hangs gracefully from a delicate sterling silver 18 inch 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 transform the natural 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: Large Whitby Jet Stone: 14x14mm, Small Whitby Jet Stones: 8x8mm, Necklace Length: 18 inches.