Sterling Silver Blue John Medium Round Tree of Life Necklace, P3441. This sterling silver pendant features a gorgeous disc of Blue John, sourced directly from Castleton, Derbyshire. Set within a sterling silver frame and overlaid with a beautiful Tree of Life design, this elegant and unusual piece is perfect for nature lovers. The item also comes with an 18 inch sterling silver chain.  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 into these stunning pieces of jewellery. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions 24mm