The Beautiful Necklace of Zehra Kamikasi is a 1398 years old piece made by Zehra Kamikasi, a copper smith living in Istanbul / Constantinople / Byzantium.
Considering its age and the quality of the work, people consider it of considerable value.
It is engraved with central asian patterns and some symbols pertaining to Manichaeism.
This piece doesn't exist, but as a legend. It is said that in the year 645, Poyraz Kamikasi, the owner, made use of it in Barcelona to empower the Kamikasi family. Now it is lost, or broken, we will never know.