Shungite is a black gemstone that is more than 2 billion years old. It looks like coal and has a unique structure between amorphous (non-crystallic) and stone.
Shungite has the capacity to absorb (polluting) particles from the environment and has anti-bacterial qualities. The stone is used for protection against electro smog from computer screens. Also, it has been used since the 18th century for medical treatments. Peter the Great founded the first Russian spa in Karelia and there, used the water purifying qualities of shungite. He also used it to supply the Russian army with purified water.