A DIAMOND, CITRINE AND RUBY 'BIRD ON A ROCK' BROOCH, BY JEAN SCHLUMBERGER, TIFFANY & CO.

A DIAMOND, CITRINE AND RUBY 'BIRD ON A ROCK' BROOCH, BY JEAN SCHLUMBERGER, TIFFANY & CO.
Designed as a circular-cut diamond bird, with a circular-cut ruby eye and 18k gold detail, perched on a cushion-cut citrine, 2 3/8 ins., mounted in platinum and 18k gold
Signed Tiffany, Schlumberger for Tiffany & Co., Jean Schlumberger