Peacock ore, alsno known as Bornite, is a copper iron sulfide mineral commonly found in hydrothermal vein deposits. The heat and pressure oxidizes them and they tarnish to iridescent shades of blue, purple, green. These colours grow naturally in a very thin layer on top of the rock.
In physical healing it is used to stimulate adrenaline, and they are associated with transformation. They are best for Pisces and Aries placements.