A diamond, turquoise and enamel necklace, the ribbon and bow necklace comprising three white enamelled cartouches decorated with black enamel and mounted in 18ct yellow gold, linked with gold chain to four silver bows set with mixed cut diamonds, each suspended with swagged chain and alternating collet set old European cut diamonds and oval turquoise cut en cabochon, to a 14ct rose gold bolt ring, total length 420 mm