摘要：玉瑗是璧环类玉器的一种器物类型，其萌芽可追溯到新石器时代，是应璧、环类器物的解玉之需而产生的。符合《考工记》《尔雅》所记玉瑗定义的实物，大约出现于战国时期。上海博物馆所藏的一件“重环谷纹玉璧”，与《考工记》所载“璧羡度尺，好三寸，以为度”符合若节，应是当时璧、瑗、环三器集于一体的标准器。
On Yuan
Fang Hui
(Jinan, Shandong 250100)
Abstract: Yuan is a type of jade ring originated in Neolithic Age when need to produce Bi or Huan. According to Kao Gong Ji and Er Ya the jade Yuan may first appear in Warring States Period. A Double-circles-and-grain-pattern Jade Bi from Shanghai Museum should be considered as a standard ware integrated Bi, Yuan and Huan at that time, due it meets the record from Kao Gong Ji that “ the Bi with a hole of three Cun in diameter could be used as a measurement”
Keywords: Jade Bi with a large hole in its center is called Yuan, the Bi used as a measure, the Double-circles-and-grain-pattern Jade Bi