Shungite pyramid polished 50x50mm Material - natural polished shungite stone, Size Edge 2" inch 51,5 degrees as the Giza pyramids Golden Ratio Use for: Psychic self-defense and restore, shungite water, work with spiritual energy, meditation, emf protect. Unique pyramids from selected shungite rocks with high carbon content, handcrafted, certificate of authenticity. Keled Rocks - A premium brand of shungite black stone pyramides you know and trust.