The Disturbing Ring of Zehra Bortolotto is a 4375 years old piece made by Zehra Bortolotto, a jeweler living in Akkad.
Considering its age and the quality of the work, people consider it of high value.
It is engraved with central asian patterns and some symbols pertaining to Ancient Mesopotamian religion.
This piece doesn't exist, but as a legend. It is said that in the year -1932, Eshargamelat Bortolotto, the owner, made use of it in Eridu to empower the Bortolotto family. Now it is lost, or broken, we will never know.