To cleanse, pyrite can be soaked in water or given a quick rinse – use distilled water and a glass bowl.
Over time it may blacken, simply wipe it with a polishing cloth. or a diluted silver cleaning liquid.
It can also be energetically cleansed with sage / incense.
Recharge with Selenite , or in the Moonlight
Being a natural stone, this can vary from image in shape and size and colour ( also due to screen variations ).
All stones have been cleansed and charged with reiki energy.