This is really good and a nice article to read about Moqi, Moqui, or Shaman Stones.
Moqui Marbles – found mostly in the Navajo Sandstone Formation in the state of Utah. (They can no longer be collected there because it is now part of the Grand Staircase Escalante National Monument.)
These mostly smooth, elliptical or round balls of compacted sandstone are encased in a “shell” of iron compounds. They are also referred to as “Moqui Balls”, “Thunderballs” or “Shaman Stones”.
Moqui Marbles readily accept subtle energy charges and hold them indefinitely. Treat them with love and they will return it when you need it most.
They can no longer be collected there because it is now part of the Grand Staircase Escalante National Monument, so get them before they are gone (or cost an arm and a leg).