C W Sellors 18ct Yellow Gold Blue John Unique Triangle Necklace, PUNQ0005546. This unique necklace is part of the C W Sellors handmade Heritage jewellery collection and features a stunning Blue John stone, locally sourced from Castleton, Derbyshire. The Blue John has been hand cut into an curved triangular shape and features natural inclusions within the purple and brown tones, creating a truly striking piece. The stone is set in 18ct yellow gold and hangs gracefully from a 18ct yellow gold bail and 18 inch diamond cut belcher chain, which fastens with a classic and secure bolt ring style clasp, perfectly designed for everyday wear. Dimensions: Blue John gemstone: 53mm x 33mm. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection.