In ancient Egypt, iron was a rare and symbolic metal, but scientists and historians have long wondered about the prehistoric civilization’s knowledge of metallurgy. Now, one part of that mystery has been solved: The oldest-known iron artifacts were made from meteorites. The evidence comes in the form of iron beads from approximately 3300 B.C., more than 2,000 years before the Iron Age in Egypt, and before there is record of trade in iron goods with other civilizations.