Rainbow Pyrite Tanzanite The name fluorite comes from

The name fluorite comes from its use as a flux

which over the course of millions of years becomes solid while retaining the semitransparent yellowish hue of tree sap

The spectacular display of colors these specimens display can be formed by two different geological processes: the oxidation of pyrite causing ultra-thin layers of iron oxide to form on the surface

and when exposed to the elements over a long period of time can change into the closely related malachite

Rainbow Pyrite Tanzanite The name fluorite comes fromThe famed fools gold, 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. Pyrite formations tend to be shiny and metallic, with particularly high shine or uniquely shaped pieces prized by collectors. Rainbow or peacock pyrite is a much rarer form of pyrite named for the unmistakable and