Pyrite typically forms in cubic crystals with striated faces, but it can also occur in a variety of other crystal forms. It may also be found in massive, granular, or stalactitic forms. The most common color of pyrite is a brassy yellow, but it can also have a greenish or brownish tint. The streak (the color left when it's scratched on a surface) is greenish-black.Pyrite has a metallic luster, giving it a shiny appearance.Pyrite has a hardness of about 6-6.5 on the Mohs scale, which means it is moderately hard. It often forms in sedimentary, metamorphic, and igneous rock environments. Pyrite is commonly associated with coal deposits and can also be found in hydrothermal veins.While pyrite itself does not have significant economic value, it has been historically used in the production of sulfuric acid. In addition, pyrite crystals are popular in mineral collecting and are sometimes used in jewelry and as decorative pieces.Some people believe that pyrite has metaphysical properties, including the ability to promote confidence, vitality, and manifestation of one's goals. It is often used as a symbol of wealth and abundance.