Sterling Silver Blue John & Marcasite Small Heart Locket, P2147. This stunning and sophisticated locket boasts an exquisite piece of rare Blue John stone that has been sourced directly from Castleton, Derbyshire. The stone is set within an unmissable sterling silver heart shaped locket that is embellished with marcasite beading for a glittering finish. The pendant sits on a delicate sterling silver chain that fits comfortably around the neck. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural Blue John stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John necklaces on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.