18ct White Gold Blue John 0.125ct Diamond Faceted Heart Necklace, PUNQ0001662. This stunning 18ct white gold pendant features a unique hand carved Blue John gemstone that has been sourced directly from Castleton, Derbyshire. The necklace features an 18ct white gold bale adorned with 14 pave set diamonds totalling 0.125 carats. The perfect gift for someone special. This beautiful heart comes 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.