Silver blue john marcasite celtic crossover flower necklace p2129 this stylish pendant boasts an strikingcabochon of rare blue john stone that has been sourced directly from treak cliff cavern in castleton the stone has been set within an intricately crafted sterling silver flower design embellished with sparklingmarcasite the pendant sits gracefully on a fluid 18 inchsterling silver chain that is fastened by a classic bolt ring clasp for easy wear all our blue john jewellery is designed