The Exceptional Ring of Liu Ha is a 686 years old piece made by Liu Ha, a jeweler living in Shanghai.
Considering its age and the quality of the work, people consider it of considerable value.
It is engraved with asian patterns and some symbols pertaining to Buddhism.
This piece doesn't exist, but as a legend. It is said that in the year 1350, Liu Ha, the owner, made use of it in Shanghai to empower the Ha family. Now it is lost, or broken, we will never know.