18ct Yellow Gold Blue John and 0.015ct Diamond Faceted Marquise Necklace, PUNQ0004309 An elegant unique, faceted marquise shaped pendant of Derbyshire Blue John set in 18ct yellow gold. Just below the bale sits a single 0.015ct diamond adding extra sparkle and detail, and an 18ct yellow gold 18 inch chain completes the piece. Dimensions: 10mm x 5mm.  All articles are lovingly and securely dispatched with our elegant jewellery packaging. Matching items also available within this collection.