Silver blue john marcasite pointed pear hook earrings e2239 these stunning drop hookearrings feature pointed pear shaped hand carved blue johngemstones set at the heart of a sterling silver and marcasite frame these earringsuse only the finest blue johnstone which has been source directly from treak cliff cavern in castleton they hang elegantly from sterling silver hooks all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a t