This listing is for one (1) tumbled Shungite. Approximately 1" in size that will be intuitively chosen for you.
Shungite has many useful properties, including purity and protection. It is mosly known for its ability to block electromagnetic energy or EMF's. Placing a stone near your phone or computer will not interfere with your devices, but will absorb some of the output. Holding shungite while meditating will help combat headaches, back pain, muscle pain, blood pressure, and inflammation.