18ct Rose Gold Whitby Jet Diamond Torpedo Necklace. CMT087. This exquisite necklace by C W Sellors is hand crafted in 18ct rose gold and features a large highly polished Whitby Jet gemstone which has been sourced directly from the North East Coast of Yorkshire. The Whitby Jet is embellished with brilliant cut diamonds adding a luxurious sparkle and sits gracefully on an 18 inch 18ct rose gold chain and would be a beautiful addition to any jewellery lovers collection. At C W Sellors, we have an expert team of gemstone and diamond specialists who handpick and grade each jewel to meet our high standards and a team of talented in house designers who combine their talents to bring you our exclusive Precious Gemstone collection. You can find other Whitby Jet pieces online and in store to compliment this necklace. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.