Malachite has been used as a pigment in various forms of artwork for centuries. It was used by the ancient Egyptians to create green pigments for cosmetics and decorative items, and was also used by the ancient Greeks and Romans for similar purposes. In the Middle Ages, malachite was ground into a fine powder and mixed with oil, egg yolk, or gum arabic to create a green paint that was used in illuminated manuscripts and other forms of art. In more modern times, malachite has continued to be used as a pigment in paints and inks, and is often used to create a range of shades of green. Some artists appreciate the rich, vibrant color of malachite and the way it can be layered and blended with other colors to create a wide range of hues.