Pair of Two-Color Gold and Diamond Half-Hoop Earrings. Photo: Courtesy Doyle New York 

18 kt., diamonds ap. 1.85 cts., ap. 13.3 dwt. Diamonds: H-I-VS. Good condition. Posts and clip-backs. 7/8 x 5/8". Estimate $2,500-3,500

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