Natural pearl and diamond brooch, late 19th century. Photo Sotheby's.

Of starburst design  set with a natural pearl, cushion-shaped and rose diamonds, suspending a natural pearl drop, later brooch fitting. Estimation 3,500 — 5,500 GBP. Lot. Vendu 6,250 GBP

Accompanied by the Laboratoire Français de Gemmologie report no. 208913, stating that the pearls were found to be natural, saltwater. 

Sotheby's. Fine Jewels. London | 12 déc. 2013. www.sothebys.com