Azurite is a blue copper mineral with the chemical formula It forms monoclinic crystals. Azurite weathers into malachite. Azurite is used as a pigment, in jewelry, and as a decorative stone. This stone is called "Velvet Beauty" from Bisbee, Arizona.
Geode / Mineral Friends Geodes are created when gasses become trapped in the layers of rock - usually volcanic rocks. Crystalline structures form on the inside, surrounded by harder minerals - for example amethyst surrounded by agate.