Pair of Platinum, Jade, Diamond and Onyx Clip-Brooches - photo Sotheby's

Of geometric design, the jade rings set at the sides with old European-cut diamonds weighing approximately 5.40 carats and calibré-cut onyx. With a vintage leather case signed Coven LaCLoche, 325 Calle Florida, Buenos Aires. Estimation: 15,000 - 20,000 USD

Sotheby's. Important Jewels. New York | 07 févr. 2013 www.sothebys.com