 The principal crowns worn by Ethiopian emperors and empresses regnant are unique in that they are made to be worn over a turban.They usually have the form of a cylinder of gold (although some of the crowns at the Church of Our Lady Mary of Zion in Axum have the form of a gold cube) with a convex dome on the top with usually some form of cross on a pedestal.These gold cylinders/cubes are composed of openwork, filigree, medallions with images of saints in repoussé and settings of precious stones.