The stony spheres are concretions — sandstone balls cemented by a hard shell of iron oxide minerals. Often called moqui marbles, acres of the chocolate-colored rocks are scattered across Utah and Arizona. They tumble from the pale, cream-colored Navajo Sandstone beds, when wind and water wash away the softer rock.

The Moqui Marbles I am listing came from the high desert in Southeast Utah.

These concretions have been used for healing and children used them as toys.  There are many websites that give you information on these fascinating stones.

I will be listing many groups of Moqui Marbles and would gladly combine shipping on like items.