According to Madagascar Minerals: Petrified Wood from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone", is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree having turned completely into stone by the process of permineralization.
Petrified Wood is a stone of transformation. It is believed that petrified wood assists with helping you to advance to your highest chosen level. It helps to make you feel safe and secure.