and is one of the more common gems although pieces of exceptional hue and clarity are considered fairly rare and can be extremely valuable
where some truly impressive specimens like this very rarely emerge from the mines
The unique combination of smoky
Azurite has been sought after since ancient times as a gem and for use in blue pigment
which over the course of millions of years becomes solid while retaining the semitransparent yellowish hue of tree sap
Fluorite Cubes on Matrix Tanzanite and is one of theFluorite is one of the most variable of all crystalline minerals, occurring in shades of blue, green, purple, red and many other colors corresponding to their physical makeup and conditions when the mineral was formed. The name fluorite comes from its use as a flux, or chemical cleaning agent, in iron smelting and other metallurgy. Pure fluorite is clear, but most specimens have vivid color due to various impurities and are often fluorescent. With a