Lot 4. Natural blister pearl and diamond brooch, late 19th century. Estimate 4,500 — 5,500 GBP. Lot sold 6,875 GBP. Photo: Sotheby's.
The natural blister pearl framed by circular-cut and cushion-shaped diamonds.
Accompanied by The Gem & Pearl Laboratory report no. 12611, stating that the blister pearl was found to be natural, saltwater.
Sotheby's. Fine Jewels, London | 06 Jun 2016