Weight: Averages: 8 ounces
Grade: A Grade
Septarian - or Septerye is a combination of Calcite, Chalcedony and Aragonite. Septerye is formed when cracks appear in the solidified silica found in seafloor sediment mineral accretions and fossil stones. When the nodule (mud based rock) cracks, due to shrinkage, colonies of micro sea organisms settle into the cracks. When these organisms and minerals crystallize they create a layer of calcite which acts like a cementing bond between the cracks of the sedimentary mud rock, Chalcedony, and aragonite. This rock type has a lovely color range and fantastic patterns. Classically polished into an egg shape and nicknamed "Dragon Eggs" which tend to have crystalline exposures.
Grab bag means we have more than one of a particular material and we will choose one from the lot at random and send it to you.
