Petrified Wood, technically a fossil and a crystal, comes from the trunks and branches of ancient wood. These fossilised specimens have had their chemical body replaced by another mineral over time. This occurred during the Mesozoic Era and Paleozoic Era 250-66 million years ago. The colours on each piece can range greatly with deep reds, browns, blues, and even yellows developing throughout the interior body. Most Petrified Wood found on the market comes out of Madagascar and Australia with occasional commercial deposits seen throughout Africa and South America.