Jan 29, 2005, 3:20 PM
Post #1 of 1
Azurite is highly prized for it's deep "azure" blue, that is unrivaled by any other material. Azure is taken from the Arabic word for blue.
Azurite gets its color from copper, and the type of chemical binding it has with carbonate (CO3) and hydroxyl (OH).
Azurite has been used as a pigment for paints and fabrics since ancient times.
Azurite is often found together with Malachite, and beads and slabs of this "Azurite/Malachite" combination are quite stunning.
Azurite and Malachite have very, very similar chemical formulas. Malachite is the more highly oxidized form, and the tendency is for azurite to slowly transform into Malachite.
This transformation can be seen in some old paintings where the deep blue skys have now taken on a peculiar green color.
In mineral specimens, over time, the azurite crystals transform into malachite pseudomorphs, creating some beautiful mixed specimens.
Below is a photo of a stunning top shelf specimen we recently acquired:
PUGDOG's Rock & Bead Shop
Pittsburgh, PA 15217
(This post was edited by pugdog on Jan 29, 2005, 3:22 PM)