An Antique Diamond and Ruby Brooch, by Fabergé. Photo Christie's Image Ltd 2014

The stylized diamond-set scrolling stem with pear-shaped diamond leaves, enhanced by a cabochon ruby collet and two heart-shaped diamonds, Russia, circa 1890, 4.6 cm, with Russian assay mark for gold, in red leather case stamped with a golden crown. Stamped KF (cyrillic) for Karl Fabergé, with scratched inventory number 138164. Estimate: CHF60,000 – CHF90,000 ($68,022 – $102,032).

Provenance: Christie's Geneva, 15 November 2007, lot 267.

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014. Geneva - www.christies.com