Shungite Crystal Metaphysical and Energetic Properties: Shungite is a stone found exclusively in Russia. It is a black, carbon-based material that has been said for years to be extremely good for absorbing EMF rays and for "clearing up" anything that is negative. Shungite comes in several grades (or qualities) and can be rough or polished.
Shungite is also said to help reduce your EMF exposure. You can read more about crystals for EMF protection right here.
These pyramids have an approximately 5cm base and a 38mm standing height.