Bismuth Is a Chemical Element With An Amazing Iridescent Oxide Surface Bismuth is a chemical element with symbol Bi and atomic number Bismuth, a pentavalent post-transition metal, chemically resembles arsenic and antimony.
sixpenceee: Bismuth Crystals are beautiful. They have an interesting geometric form and are rainbow-colored from the oxide layer that quickly forms on them. Here’s a website that has instructions on how to make them. (Source: sixpenceee, via accio-peace)