PYRITE

CLASS: Sulfide. . . CHEMICAL FORMULA: FeS2. . . CRYSTAL SYSTEM: cubic
CRYSTAL FORM: cube, octahedron, pentadecahedron
COLOR: yellow, gold
PHYSICAL PROPERTIES: hard (6/6,5 Mohs), very heavy (5/5,2 g/cm3), lack of cleavage, very fragile, opaque, metallic luster, produces sparks when rubbed with metallic elements, insoluble in hydrochloric acid.
CURIOSITIES: related to prosperity and abundance.