Fenster quartz gets its name from the complex interior skeletal structure which has created many windows and chambers within the crystal. The name is derived from the German word “Fenster”, meaning window. The unique formation is caused by internal and external dissolution growth which is the result of unstable conditions during crystallization. Light reflects from the interior planes creating dancing patterns of light as you turn the crystal in your hand. The crystals have grown in a very similar formation as a Herkimer diamond in combination with elestial formations. For this reason, these crystals are also known as Elestial Lightkeepers.