Lot 5006. A rare yellow jade cong, Neolithic period, probably Qijia Culture (2200 BC – 1600 BC); 12.7 cm, 5 in. Estimate 200,000 — 250,000 HKD. Sold for 375,000 HKD (44,370 EUR) . Courtesy Sotheby's. of square section, pierced through the center with...