18ct White Gold Whitby Jet Diamond Faceted Pear Necklace SH5_1BJ_D This class necklace features a Blue John gemstone which is claw set in 18ct white gold. Above the Blue John there is a single round brilliant cut diamond with a total carat weight of 0.08 carats. The Blue John stone has been sourced directly from Castleton, Derbyshire and is supplied complete with an 18ct white gold chain.  All articles are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection.