Nardi. A Blackamoor Brooch with Diamond, Pearls and Sapphires in Gold. photo Philips de Pury & Co

Designed as a blackamoor with a carved ebony head, wearing a textured and braided gold turban with sapphire-set star motifs, the top set with a white cultured pearl measuring approximately 8.05 mm, with collet-set diamond ear pendants, to the shield-shaped tunic decorated with circular-cut sapphires and a circular-cut diamond and pearl trim, mounted in 18K yellow gold, length 2 inches.   Signed 'S. Nardi' with a Nardi box. ESTIMATE $4,000-6,000

Philips de Pury & Co. Wewels. 8 december 2010. 450 Park Avenue New York. www.phillipsdepury.com