Silver blue john marcasite pear centre beaded edge ring r823 this striking statement ring boasts a tear drop shaped cabochon of rare blue john stone that has been sourced directly from the derbyshire blue john cavern in castleton the stone is placed within an exquisite sterling silver setting further detailed and embellished by dazzling marcasite bringing a sophisticated sparkle to the piece the ring is completed by a classic sterling silver band with marcasite stones on the shoulders all