Shungite is a very powerful and special stone! It has been used in Russia for hundreds of years as a way to purify water. It removes most harmful substances as well as harmful microbial life as it is made up of 98% Carbon. It is also a proven anticeptic! After multiple centuries, Shungite is finally being used in America and other countries. This truly is a must have stone! Drop it in your drinking water for a few hours and come back to clean, crisp purified water!