Sterling Silver Blue John Crescent Small Necklace. P3301 This elegant necklace features a stunning oval shaped cabochon of the finest Blue John stone, sourced directly from Castleton, Derbyshire. The pendant hangs gracefully from an 18 inch sterling silver chain which is completed by a classic bolt ring clasp for easy wear. Handcrafted in sterling silver and inspired by the key design of the crescent facade and the oval shape of the pool within the Pump Room, C W Sellors\' Buxton Crescent jewellery collection is set with a choice of white Carrara marble - representing the interior of the Pump Room - and the finest cut Derbyshire Blue John gemstone. 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. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: 15mm x 21mm excluding bail.