Calcite is clear naturally but it can be found in a variety of brilliant colors due to the presence of chemical impurities during formation
These highly variable pieces contain Fluorite crystal clusters within different matrixes
fluorite specimens have been prized since ancient times and are now among the most popular minerals in the collecting world
and blues as well as the more commonly encountered clear or pale white
Creedite is sought after for its unique fine crystalline structure
Fluorite Opal Calcite is clear naturally butFluorite 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