Common alloy metals are manganese, nickel, molybdenum, chromium, and vanadium. It is rich in minerals, especially copper, manganese, chromium, and iron. It was also rich in asbestos, granite, vanadium, chromium and manganese. Emerald is green beryl, colored by trace amounts of chromium and sometimes vanadium. This is typical of all redox reactions where hexavalent chromium is reduced to trivalent chromium. Carbon 1.45%, Chromium 14.00%, Vanadium 4.00%, Molybdenum 2.00%. Chromite is a mineral that is an iron chromium oxide. Oxidation resistance in stainless steels increases with additions of chromium, silicon, and aluminium. Increasing chromium and nickel contents provide increased resistance. Chromite is an oxide of chromium and iron. Chromium and nickel nanoparticles have also been found. Stainless steel is an iron alloy containing a minimum of 11.5% chromium. This approach has been evaluated for treatment of cadmium, chromium, and lead. The tip can be made of a combination of copper, nickel-iron, chromium, or noble metals. Additional plating was designed by manipulating the chromium and nickel composition of the alloy.