Azurite: The blue gem material, ore of copper, and pigment.
Azurite is a copper carbonate hydroxide mineral with a chemical composition of Cu 3 (CO 3) 2 (OH) 2. It is best known for its characteristic deep blue to violetblue color. The blue color, known as "azure," is like the deep blue evening skies often seen above deserts and winter landscapes. Azurite is not a common or abundant mineral, but it is ...