Stromatolite Stromatolites are stony structures built up by Cyanobacteria. They are the earliest fossil evidence of life on Earth Stromatolites differ from normal fossils because they are formed by the activities of micro-organisms. Stromatolite is a stone that brings about insightful healing from deep within the earth, reducing stress levels and activating positive energies for an emotional improvement. These stones are a very useful aid in past-life recollection, shamanic journeying, and regression. It is an excellent stone for introspective meditation.