C W Sellors Sterling Silver Whitby Jet Pearl Open Twist Necklace. P3367. This contemporary and stylish sterling silver necklace features a hand carved pear shaped Whitby Jet gemstone, set inside an open twist design with a lustrous pearl to create a unique offset open two stone design. This lovely piece is supplied complete with an 18 inch sterling silver chain. Dimensions: 33mm x 14mm, Whitby Jet; 17mm x 12mm, Pearl; 5mm x 5mm. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection.