9ct Yellow Gold Whitby Jet Blue John Double Sided Swivel Fob Necklace, P116/9. This classic double sided fob necklace is part of our Heritage handmade jewellery collection and features an oval locally sourced Whitby Jet gemstone on one side and an oval Derbyshire Blue John gemstone on the other. The stones are set in a hinged 9ct yellow gold pendant, which moves with the wearer. The look is completed by a crown styled bail, hanging gracefully from an 18 inch yellow gold chain.  All our British gemstone jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural British gemstones into these stunning pieces of jewellery. You can find other matching British gemstone jewellery and other British gemstone necklaces on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging Dimensions: 32mm x 26mm, Whitby Jet and Blue John stones; 12mm x 17mm