Silver, symbolized as Ag (from Latin "argentum") and atomic number 47, is a soft, white, lustrous transition metal known for its high electrical and thermal conductivity and reflectivity. Found naturally in the Earth's crust, silver is often produced as a byproduct of refining copper, gold, lead, and zinc. Valued historically as a precious metal, silver is used in currency, jewelry, solar panels, and various industrial applications. It also plays a role in medicine as an antimicrobial agent.