Sterling Silver Whitby Jet Blue John Round Swivel Fob Necklace, P258_12. A large, stylish double sided pendant of Whitby Jet set and Derbyshire Blue John set in an eye catching sterling silver design. Hand carved to a round shape, the clean cut edges and mirror like shine make this pendant contemporary and unique. Presented on an 18 inch sterling silver chain through a fixed bail at the top.  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: 35mm x 22mm, Whitby Jet and Blue John; 16mm x 16mm.