Green Clear Fluorite Azurite Metacanthian Trilibite from the Mid

Metacanthian Trilibite from the Mid Devonian Period

and is one of the more common gems although pieces of exceptional hue and clarity are considered fairly rare and can be extremely valuable

Azurite has been sought after since ancient times as a gem and for use in blue pigment

Fluorite crystals are well shaped

Green Clear Fluorite Azurite Metacanthian Trilibite from the MidFluorite 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