TIFFANY & CO., JEAN SCHLUMBERGER, A STAR SAPPHIRE AND DIAMOND DRESS RING The oval cabochon star sapphire estimated to weigh between 55 to 60 carats, to crossover pavé set diamond leaf shoulders, approximately 2.96 carats total, to lattice wire work shank, stamped Tiffany Schlumberger 18kSize/dimensions: finger size JGross weight: 34.2 gramsProvenance: From the collection of Victoria, Lady de RothschildBorn in 1907, Jean Schlumberger has become recognised as one of the master jewellery designers of the 20th century. He began designing costume jewellery for Elsa Schiaparelli in Paris in the late 1930's, and gathered around him such leading socialites and style icons as the Duchess of Kent, Daisy Fellowes and Diana Vreeland, from whom he received his first jewellery design commissions. After the end of the Second World War, Schlumberger opened a workshop in New York, followed by a boutique in Paris in 1950. In 1956 he was invited to become the Vice President of jewellery design at Tiffany & Co., making his name synonymous with Tiffany's jewellery design.品相报告: The panel measures 2.7cm x 2.2cm.