abstract:Egyptian blue, also known as calcium copper silicate (CaCuSi4O10 or CaO·CuO·4SiO2) or cuprorivaite, is a pigment used by Egyptians for thousands of years. It is considered to be the first synthetic pigment.
Thanks to front-page exposure in local newspapers and discussions on news shows and social-networking websites, the "woman with the blue bra" has seared herself into the Egyptian public consciousness.