Aquamarine and diamond 'Bird on a rock' brooch, Jean Schlumberger for Tiffany & Co., circa 1995, modelled as a bird, pave-set with round brilliant-cut diamonds, the eye accented by a circular-cut ruby, highlighted with gold plume, beak, legs and feet, perched on a cushion-shaped aquamarine weighing approximately 60.00 carats, mounted in 18ct gold and platinum, length approximately 51 mm, signed Tiffany & Co., Schlumberger. Accompanied by a Tiffany & Co. Box. Literature John Loring, Tiffany's 20th century: a portrait of American style, Harry N. Abrams, New York, 1997, cover (illustrated, another example).