Antique Silver, Gold, Turquoise and Diamond Bow Brooch. Photo: Courtesy Doyle New York

The stylized double bow centering two diamond-set ribbons, flanked by two ribbons set throughout with 24 oval and round cabochon turquoises, suspending one pear-shaped cabochon turquoise approximately 16.0 x 12.0 mm., surrounded by diamonds, totaling 50 old-mine cut diamonds approximately 4.40 cts., pendant detachable, approximately 15.7 dwt.  Estimate $4,000-6,000

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