Sterling Silver Blue John Rectangle Cufflinks, CL510. These classic cufflinks feature two rectangular shaped cabochons of the finest Blue John stone, sourced directly from Castleton, Derbyshire. The elegant sterling silver cufflinks are secured by a simple T-bar fastening which swivel for easy wear offering an impeccable finish to any sharp suit or formal occasion. 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 stylish 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. Matching items are available within this collection.