The jade disc bi is of compressed form, carved on the body with raised Gu patterns, center with large hollow hole, the jade is of celadon-brown color tone with slight russet.|Han Dynasty period.||Diameter: 4 in (10.2 cm)|漢 玉雕穀紋璧|玉璧形製規整，周身大部分受沁，局部可見白玉質，質地溫潤細膩。雙面琢刻紋飾，內外邊緣均飾有同心圓，中間部位雕飾八組勾連雲紋，排列勻稱。勾連雲紋的大小，由外及內呈遞減的趨勢，遞減幅度均勻緩和不突兀，顯示出精湛的琢玉工藝。