C W Sellors 18ct White Gold Blue John Diamond Faceted Upside Down Pear Necklace SH19_12 This classic upside down pear necklace features a Blue John gemstone which is set in 18ct white gold. Above the Blue John there is a single round brilliant cut diamond set into the bale, with a total diamond carat weight of 0.03 carats. The Blue John stone has been sourced directly from Castleton, Derbyshire and is supplied complete with an 18 inch 18ct white gold chain.  All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection.