9ct Yellow Gold Blue John Twisted Rope Edge Brooch, M120. The elaborate coil and knot design contrasts with the simplicity of a simple oval of Blue John at the centre of this hand worked 9ct yellow gold brooch. The Blue John gemstones that we use are sourced directly from Castleton, Derbyshire. Set with a horizontal bar pin to give an outfit a stylish look.  All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform natural pieces of Blue John into these stunning pieces of jewellery. You can find other matching Blue John jewellery on our website and in stores. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.  Dimensions: 29mm x 32mm, Blue John; 12mm x 16mm