Sterling Silver Blue John Four Petal Flower Necklace. P2095. This simple and stylish necklace boasts a stunning round cabochon piece of rare Blue John stone that has been sourced directly from Castleton, Derbyshire. The stone is set within an exquisite sterling silver flower design that hangs gracefully from an 18 inch long sterling silver chain completed by a classic bolt ring clasp for easy wear. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural Blue John stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John necklaces on our website. Dimensions: 12mm  x 12mm.