戰國 雙龍出廓玉璧 Chinese. Of circular form, the outer edge accentuated by a pair of opposing stylized dragons with head turning backward, crisply carved with the 'grain' pattern and pierced to the centre with a circular aperture, the stone of a beige tone graduating to a red to dark red inclusions on the side dragon appendage. Warring State period. 史書記載，漢璧用於祭祀、朝賀、徵聘、進獻、婚娶、喪葬和佩飾。此玉璧呈黃褐色，局部帶有褐紅色沁色，玉璧滿飾“谷紋”，粒小而圓，凸起，排列規矩。兩側飾龍紋，作回首狀，線條流暢。來源：南加州奇諾崗私人舊藏