Chemistry - Are There Colorful Metals Besides Gold And Copper?
Answer : Solution 1: Osmium has a bluish-gray tint. Well; slightly. Cesium is silvery-golden!, But don't wear it. Solution 2: There is no element other than gold and copper with similar colors; see http://periodictable.com/Properties/A/Color.html. There are many metal alloys that are red and golden, such as phosphor bronze, which can have a golden hue. In addition, some metallic compounds may be shiny yellow. Freshly sliced potassium is silvery, but soon acquires an oxide/nitride coat that may look yellow (perhaps due to interference of light?). Of course, "fool's gold", FeS2, was often confused with the element. See http://en.wikipedia.org/wiki/Pyrite and Image of pyrite crystal. Solution 3: The color of nanoparticles in solution depends on size, so one can create the whole rainbow of colors using a single elemental composition. See e.g. http://nanocomposix.com/pages/plasmonics for details. https://en.m.wikipedia.org/wiki/Colloidal_gold shows...