This Shungite has a deep silvery-black luster. Its appearance is similar to obsidian or coal.

Shungite is known to absorb and neutralize EMF radiation frequencies. Since the early 18th century shungite has been used in medicine and it is now sold as a pigment for paint in egg tempera and watercolor, looks way better in person, it is in a "cube" shape and would be great for protection 

Shungite Tumbled Pendent