Pietersite is known as the tempest stone due to the energies it can hold in it.
It cleanses your toxic energies away...I know a few people I could hang this on 🤣
It is also a stone of protection that keeps you safe from psychic and emotional attack.
Pietersite is also a stone of transformation giving you insight into yourself, enabling changes to take place 
I've wrapped it in copper and filled with reiki.
This beautiful piece is £16 which includes free uk postage, a free cord necklace and optional gift bag.