9ct yellow gold blue john toscana 3 pear drop necklace p1611 this striking necklace is part of our toscana collection and features 3 stunning pear shaped cabochons of rare blue john stone which have been sourced directly from treak cliff cavern in castleton 9ct yellow gold surrounds the blue john stones with an elegant branch design bale connecting them together the pendant sits gracefully on a 9ct yellow gold chain that is completed by a classic bolt ring clasp for easy wear all our blue