The archaic jade carved ornament is of flattened rectangular form in the shape of a cleaver's edge, with seven small holes on the top row, the jade is of black and white color tone with stone veins.|Shang Dynasty period.||Length: 2 3/4 in (7.0 cm) Width: 14 in (35.6 cm)|商 玉七孔刀|玉呈青黃色，玉中含有藻狀條紋斑。器呈長條形，一端略寬，一端窄而似柄。下側有刃，較為鋒利，由兩面磨成；刀背較平直，一端有一穿孔，全身共七孔。玉璋在《周禮，考工記》中有“大璋亦如之，諸侯以聘女”的記載。《周禮•考工記》又載：“大璋，中璋九寸，邊璋七寸，射四寸，天子以巡守。”說明玉璋還是天子巡狩的時候祭祀山川的器物。