Silver bullion refers to silver in the form of bars, coins, or ingots that is valued primarily for its metal content rather than its face value. Investors often purchase silver bullion as a way to hedge against inflation or economic uncertainty, as it is considered a tangible asset. The purity of silver bullion is typically measured in fineness, with .999 being the standard for high-quality silver. This means that the bullion is 99.9% pure silver. Popular forms of silver bullion include the American Silver Eagle coins and various silver bars produced by mints around the world.