Azurite
is a beautiful copper-based blue mineral that is often used in
jewelry.
The color ranges from very deep blue to
pale blue. Azurite
has also been used as a dye for paints and luxury fabrics. Azurite
is hydrated copper carbonate.
Malachite (another
copper-based mineral) and azurite are often found together. Azurite
is sometimes coated with a colorless wax or impregnated with plastic
in order to enhance the color and increase the hardness.