When mined, peacock ore, or chalcopyrite, is a bright golden color. It is not until exposure to air that chalcopyrite oxidizes to a variety of oxides, hydroxides, and sulfates. As it tarnishes chalcopyrite will display the bright metallic iridescent blues, greens, yellows and purples that you see here.
Each speicmen will differ in size and color from the ones shown. Individually sold.