Earrings are made of various metals and alloys, including gold, silver, and steel. Most earrings are made of precious metals like gold and silver, which are attractive, durable and corrosion resistant. They are also hypoallergenic, so they won't cause an allergic reaction. It is believed that earrings have been worn since the Bronze Age. The first known pair of earrings is a set of ‘fibulae’ from 6000 BC during the late Stone Age.