An art deco diamond and sapphire bracelet, Oscar Heyman & Brothers, circa 1923. Photo courtesy Bonhams

Of geometric design, set throughout with transitional and square step cut-diamonds, with French-cut sapphire detail; centering three triangular-cut diamonds, weighing 2.87 carats total; with maker’s mark for Oscar Heyman & Brothers; no. 10517; estimated remaining total diamond weight: 24.60 carats; mounted in platinum; length: 7 1/8in. Estimate:  $30,000 – 60,000

Bonhams. 19 Jun 2013. New York. Fine Jewelry