Platinum, ruby and diamond jabot. Photo: Sotheby's.

Set with numerous old European and single-cut diamonds weighing approximately 5.25 carats, accented by 28 calibré-cut rubies weighing approximately 5.85 carats; circa 1925. Estimation 12,000 -- 15,000 USD

Sotheby's. Important Jewels. New York | 24 sept. 2013 - http://www.sothebys.com