Ferronnière

A ferronnière ([fɛʁ.ɔn.jɛʁ]) is a style of headband that encircles the wearer's forehead, usually with a small jewel suspended in the centre. The original form of the headband was worn in late fifteenth-century Italy, and was rechristened a ferronnière at the time of its revival in the second quarter of the nineteenth century for both day and (more frequently) formal and evening wear.