marcasite (fes2) iron sulphide with orthorhombic crystal

background beautiful beauty bright closeup colorful colour coloured colourful crystal diamond fes2 gem gemstone geological geology glisten gold golden halide iridescent iron jewel jewelry macro marcasite material miner mineral mineralogy mining multi natural nature nobody nugget orthorhombic precious pyrite quartz rare raw resource rock science semiprecious shaft shine shiny solid specimen stone sulphide treasure unique with