Sterling Silver Blue John Unique Style Hinged Bangle. B791. This unique sterling silver and Blue John bangle, has been cut and handcrafted by our skilled jewellery craftsmen to reveal the natural beauty of the Blue John gemstone with this stylish, modern design. Each one of these stones are unique in shape, so all of the stones are not guaranteed to be the same. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen turn the raw Blue John stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John bangles on our website. Dimensions: Blue John stone 40x35mm.