Metal is one of the most versatile materials, used in everything from construction to currency and fine jewelry. But not all metals are created equal. Each has its own distinct characteristics, including hardness. Alan’s Factory Outlet made this infographic, titled “The Hardness of Metals: a Visual Representation of the Mohs Scale for Metallic Elements and Alloys (and Their Common Uses by Humans.” It features pictures and names of various metals. Each metal is color-coded in accordance with its classification as a alkali metal, alkaline Earth metal, basic metal, transition metal, metalloid, or alloy. It also explains how each metal is used by humans.