Wakandan Royal Ring

The Wakandan Royal Ring is a ring that is used by the King of Wakanda, passed to the next regent after the death of his predecessor.

A King's Death
The ring was being worn by King T'Chaka at the United Nations conference in Vienna before his death in an explosion caused by Helmut Zemo. While the fire was being put out, his son T'Challa mournfully took his late father's ring and took over his rightful role as King of Wakanda.