C W Sellors Sterling Silver Blue John and Marcasite Wave Bail Pear Necklace. P2123. This Blue John and marcasite wave bail pear shaped pendant has been made by highly skilled craftsmen within our workshops. The Blue John is of the highest quality and shows in the overall finish, the stone has been sourced directly from Castleton, Derbyshire.  It\'s beautifully made and has an elegant vintage feel. The reverse of the pendant has scrolled silver detailing. This product is made using sterling silver and includes an 18 inch Silver chain. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.  Matching items are available within this collection.