The deep blue color in our cursor pack is Egyptian blue, also known as calcium copper silicate or cuprorivaite, a pigment used in ancient Egypt for thousands of years. For the ancient Egyptians, blue was an important color. This color was associated with the sky and the river Nile and thus came to represent the universe, creation, and fertility. Nevertheless, the only natural source of blue was the rare and expensive mineral lapis lazuli, which was mined in what is now Afghanistan.