Olivine (also called peridot) is a magnesium iron silicate. It is olive-green coloured, and it is found in volcanic stones, especially in basalt. In the ancient times there was the belief that it kept the evil spirits away. It is an aura protective stone. It is also known as the loyalty stone. It expresses justice, love and affection towards other people. It relieves jealousy, bitterness and anger. It is suited to relieve stress.