Silver-Topped Gold, Natural Pearl and Diamond Brooch, circa 1860. Estimate 8,00012,000 USD. Photo Sotheby’s.

The oval-shaped design set with four natural pearls measuring approximately 6.7 to 4.8 mm, accented by numerous old mine and rose-cut diamonds weighing approximately 3.25 carats, fitted with pendant hook and removable pin finding; circa 1860. With fitted case stamped Collingwood Jewellers Ltd.

Accompanied by GIA report no. 2165650378 stating that the pearls are natural, saltwater.

Sotheby’s. Important Jewels, New York | 05 févr. 2015, 10:00 AM