the colour blue
The Pharaonic civilization dazzled the world with the extent of scientific progress it achieved, and with the passage of time and technological progress in the modern world, researchers and scientists were able to explain some of the scientific capabilities achieved by that civilization.
Among these secrets, scientists have discovered what is known internationally as The Egyptian Blue, which is not just an ordinary dye color. In addition to being a color that was difficult to manufacture at that time, Egyptian Blue has multiple chemical properties that can help in several fields.
Blue is one of the royal colors that the ancient Egyptian used in coloring, and it was difficult to obtain because it was extracted from precious metals such as lapis lazuli.
Source: websites