Sterling Silver Blue John Crescent Pin Brooch M355 This classic sterling silver pin brooch features a stunning oval shaped cabochon of the finest Blue John stone, sourced directly from Castleton, Derbyshire. 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 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: silver frame 21mm x 14mm, stone 18mm x 7mm.