Gold, jadeite, enamel and diamond paper knife. Photo Sotheby's

Set with a carved jadeite scholar decorated with black and white enamel, accented by rose-cut diamonds and cabochon emeralds, gross weight approximately 67 dwts, length 6¾ inches; circa 1920. Estimation 6,000 — 8,000 USD 

Sotheby's. Magnificent Jewels.New York | 11 déc. 2013www.sothebys.com