Used to manufacture stainless steel. Chromium gives green glass an emerald green color. It makes emeralds green and rubies red. It's used as a catalyst for scientific experiments. Used for tanning leather.
Chrome yellow is a pigment color used in painting.
Its compounds are used in textile industries as mordants. Used for anodizing aluminum. Refactory uses chromite for making bricks and shapes since it has a high melting point, moderate thermal expansion and stable crystalline structure. Louis-Nicholas Vauquelin discovered it in 1797. It has to make chromium from chromite by taking the chromite and treating it with molten alkali and oxygen, converting the chromium to alkali chromate and the latter is dissolved in water and precipitated as sodium dichromate which is then reduced with carbon to chromium oxide and the oxide is then reduced with aluminum to make chromium metal.