This type of Elite shungite is named after a Russian King Peter I.
Other type of elite shungite with 82-86% of C (Carbonium). Sertificate with x-Ray analysis you can see below. This type of shungite can be used to production pyramids, tumbled stones, balls, beads,pendants, donuts, etc. Shiny polished surface. I will place here the pictures of tumbled common shungite and shungite elite type 2.