18ct Yellow Gold Whitby Jet Blue John Double Sided Swivel Fob Necklace, P209. This classic fob swivel necklace is part of the C W Sellors Heritage handmade collection and features double sided pendant set with oval cut locally sourced Whitby Jet and Blue John. The stones are set in a hinged 18ct yellow gold pendant, which moves with the wearer and features a unique open chain design, hanging gracefully from an 18 inch 18ct yellow gold chain.  All our gemstone jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural gemstones into these stunning pieces of jewellery. You can find other matching gemstone jewellery on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: Whitby Jet and Blue John stones; 18mm x 14mm.