《周礼·秋官司寇·衔枚氏&司仪》
统一六种瑞玉的样式：王用的镇圭，公用的桓圭，侯用的信圭，伯用的躬圭，子用的谷璧，男用的蒲璧。
成六瑞：王用瑱圭，公用桓圭，侯用信圭，伯用躬圭，子用谷璧，男用蒲璧。
Unify the models of six types of瑞玉 (auspicious jades): a镇圭 (town-stabilizing tablet of jade) for the lord, a桓圭 (perpetual plaque of jade) for a公 (duke), a信圭 (trustworthy tablet of jade) for a侯 (marquis), a躬圭 (bowing/courteous tablet of jade) for a伯 (count), a谷璧 (valley disc of jade) for a子 (viscount), and a蒲璧 (cattail disc of jade) for a男 (baron).