Also known as “Fools Gold,” this widely distributed sulfide mineral has fooled many miners into thinking they’ve struck it rich. Pyrite is a valuable sulfur ore and is used to make sulfuric acid and iron sulfates. In Greek, the name means “fire stone” as it forms sparks when struck together. Pyrite forms in many crystalline systems including cubic, pentagonal, dodecahedral, and octahedral. The golden-colored stone is found worldwide, but major deposits of iron pyrite occur in Peru, USA, Spain, and Mexico. It is said to be an excellent shield against negative energy and pollutants.