Renaissance Revival Gold, Pearl, Multicolored Pearl, Diamond and Enamel Pendant-Brooch. Photo: Courtesy Doyle New York

The circular-shaped mount centering a black enamel dome surmounted by a diamond-set star, encircled by rose-cut diamonds, accented by 3 semi-baroque pearls approximately 9.0 mm. and 3 dark gray, pinkish-brown and taupe pearls approximately 5.0 mm., joined by pairs of old-mine cut diamonds edged by red enamel, within a black enamel circle decorated with gold dots, spaced by old-mine cut diamonds, suspending 3 pearls approximately 4.8 mm., framed by rose-cut diamonds, reverse with glazed compartment, circa 1860.  Estimate $12,000-18,000

Doyle New York. Important Estate Jewelry - Wednesday, September 21, 2011 at 10am. www.doylenewyork.com