Fluorite Mixed on Matrix Petrified Coral pyrite is an abundant sulfide

pyrite is an abundant sulfide mineral that despite some similarities can easily be distinguished from actual gold by its crystal form (typically cuboidal) and being much harder whereas gold is soft and malleable

As a mineral specimen or gemstone Barite can be found in many colors including vibrant reds

highly variable Chalcedony spheres or roses are almost geode-like in appearance and one can clearly see the process of geode or agate formation in progress in each specimen

a ghost or phantom of the crystal during its formation still remaining in the interior

The name fluorite comes from its use as a flux

Fluorite Mixed on Matrix Petrified Coral pyrite is an abundant sulfideFluorite 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