Moqui or Shaman Stones have a sandstone core covered by a hard shell of iron oxide minerals. These balls form naturally and are named after the Hopi Indians who used to be called Moqui. Similar stones are found on Mars. They are deeply connected to the Earth and are believed to be one of the most energetic stones on Earth. They are good for grounding, energizing, astral travelling, psychic protection, meditation, aligning energy centers, and boosting intuitive endeavors.