An Art Moderne gold and diamond bracelet comprised of asymmetrical pyramidal links arranged in an opposing fashion, each set with a brilliant-cut diamond, in 18k and platinum. René Boivin, France. Atw 1.43 cts. Certificate from Jean-Norbert Salit

René Boivin founded his storied jewelry house during the 1890s in Paris. Upon his death in 1917 his wife Jeanne, the sister of the famous couturier Paul Poiret, took over the running of the company. This was an unusual path for a woman at the time, and she was the first woman to head a major jewelry house in Paris. Under her oversight, the firm created exceptional jewelry and continues to be recognized as one of the most important jewelers of the 20th century.