Bismuth is a chemical element with the symbol Bi and atomic number 83. It is a heavy, brittle metal that is often found in nature as a byproduct of mining other metals like lead and copper. Bismuth has a unique iridescent appearance, displaying a range of colors when oxidized, making it popular for decorative purposes and in art. In addition to its aesthetic qualities, bismuth is used in various applications, including pharmaceuticals. For example, bismuth subsalicylate is a common ingredient in over-the-counter medications for treating upset stomachs and diarrhea. Its low toxicity makes it a safer alternative to other heavy metals.