Merkabahs are tetrahedrons, made by the intersection of two, three-sided pyramids. Merkabahs are great tools for working on your spiritual transformation, which some believe is the whole purpose of our existence. Merkabahs are believed to form a spiritual shield around the holder. In upper dimensions, the geometric shape of the human energy field is said to be in the shape of a Merkabah. Thus, meditating with a Merkabah helps us to connect with our higher self.
A merkaba (sometimes spelled "merkabah") is an eight-pointed three-dimensional star in sacred geometry. The merkaba is said to be the "divine light vehicle" used by ascended masters to connect with the higher realms, something like a chariot. "Mer" means light, "Ka" means spirit, and "Ba" means body. With its intersecting triangles, it represents the connection between the human and the Divine.
Shungite is purported to absorb or neutralize the electro magnetic field, thus protecting from this radiation.