Pair of Multicolored Diamond Button Earrings. Photo: Courtesy Doyle New York 18 kt. blackened gold, 110 diamonds ap. 20.50 cts., ap. 11.7 dwt. Estimate $8,000-12,000 Diamonds: light yellow, medium brown, cognac, yellowish-brown, deep yellow, mostly VS,...

Laura Vere-Hodge of Christies surveys "Flag" by artist Jasper Johns. The painting is part of the collection of Michael Crichton, best selling author of Jurassic Park, which highlighted a sale of post-war and contemporary art at Christies in New York on...