Gold

Uses

Gold’s resistance to corrosion makes it valuable well beyond decoration. In electronics, thin layers of gold coat connectors, circuit board contacts, and wire bonds inside computer chips because it conducts electricity reliably and never tarnishes, which matters enormously in devices meant to work flawlessly for years. Dentistry has used gold alloys for fillings and crowns for a similar reason: it’s biocompatible and doesn’t corrode in the mouth. Gold also remains central to the global financial system, held by central banks and investors as a reserve asset precisely because it doesn’t degrade and has held cultural value across nearly every civilization in history.

Its most visible use, though, remains jewelry, which consumes the majority of the gold mined each year — a role gold has played for millennia thanks to its color, workability, and permanence.

History

Gold has no single discoverer — it was already known and worked by ancient civilizations including Egypt, Mesopotamia, and cultures throughout the Americas and Asia, in some cases thousands of years before recorded history. It was likely one of the first metals humans used, since it occurs naturally in a pure, workable metallic form and doesn’t need smelting from ore the way iron or copper does. Its Latin name, aurum, gave rise to the chemical symbol Au, and gold’s rarity, beauty, and durability made it a natural choice for currency, ornamentation, and symbols of power across almost every culture that encountered it.