Karelian Heritage Shungite Crystal EMF Protection Jewelry Set of Pyramid, Pendant and Keychain S043 Genuine shungite stone set, Natural black Russian stone for crystal healing Made of polished III type regular shungite. Type III shungite contains up to 50% of carbon. It has deep gray or black color, small pyrite infusions are possible. Shungite items are known for being a powerful shield against EMF radiation, geopathic stress and any other forms of negative influence. Manufactured by Karelian Heritage Company and comes in original packaging with a business card