One of a kind Stromatolite fossil cabochon. This natural Stromatolite fossil cabochon measures 50 x 26mm. Stromatolite stones contain many layers of mainly limestone embedded with fossilized blue green algae. These stones are believed to be over 3 billion years old. WOW. Stromatolite stones are known for their beautiful banding of color often with iron deposits giving them a reddish color. Stromatolite is said to possess the energies of the Earth. It is a calming stone, guiding the holder to recover from intellectual stress and trauma. Don't miss out on this one of a kind Stromatolite fossil cabochon.