Moqui Marbles Pair Natural Utah Rock Formation Shaman Stones / Mars Blueberries

Moqui Marbles Pair (2 per order) The pair will be pick at random from the group of marbles sown in the picture. You can expect each marble will roughly be 3/4″ to 1″ in diameter. – Moqui marbles are small, brownish-black balls composed of iron oxide and sandstone that formed underground when iron minerals precipitated from flowing groundwater. They occur in many places in southern Utah either embedded in or gathered loosely into “puddles” on the ground near outcrops of Jurassic age Navajo Sandstone. Moqui marbles are also known by collectors by many other names—Shaman Stones, Navajo cherries, Navajo berries, Kayenta berries, Entrada berries, Hopi marbles, Moqui balls, or Martian Blueberries. Geologists call them iron concretions. These spherical iron concretions commonly range in size from a fraction of an inch (pea size) to several inches in diameter, although some can be as large as grapefruits.