|In history, rings have served as a symbol of status and were exchanged as a pledge or seal of faith. They were often also used as money. Talismanic rings, endowed with many charms and powers, were often worn. The betrothal ring, used by Egyptians, Greeks, and Romans, later evolved into the wedding ring. The engagement ring set with a precious gem came into use in the Middle Ages; the diamond attained popularity in the 15th century and became customary in the 1800's. From the Middle Ages rings have figured in the coronation of kings and the consecration of bishops as emblems of authority or mystical significance. Later, memorial rings and mourning rings became fashionable.