Peridot, sapphire and enamel necklace, Louis Comfort Tiffany, Tiffany & Co., circa 1910, modelled as a line of blue and green plique-a-jour enamel leaf motif links centring a fan-shaped peridot within an open work applied enamel twisted wire surround suspending an oval sapphire terminating in an enamel and peridot swing drop mounted in 18ct gold, length approximately 385 mm, signed Tiffany & Co.