Do you need a ring that includes a gemstone as old as the dinosaur? On the off chance that indeed, you should view petrified wood rings. Petrified wood is a fossilized gemstone whose starting points can be followed back to the Mesozoic Period and Paleozoic Time, a period around 250 to quite a while back. The most well known place where you can find this wonderful gemstone is the Petrified Timberland Public Park.