This disk was originally made of gray white jade. Due to the effects of mineral elements in the environment where the disk was buried, the unearthed disk shows gorgeous multi-colors: mainly reddish purple, with dark and gray stains and white stripes. This disk has a large round hole and narrow ring, with raised edge around the hole-it is thus named Low- Collared Bi Disk. This style of disks is peculiar to the Jinsha site, and disks of this shape have never been unearthed in other sites.