9ct Yellow Gold Whitby Jet Spiral Flower Necklace, P2556. This contemporary necklace features a round hand carved Whitby Jet gemstone which is set within the centre of a highly polished swirl of 9ct yellow gold. This item is supplied complete with and 18 inch 9ct yellow gold chain. Dimensions: 12mm x 10mm, Whitby Jet; 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.