Beautiful piece of petrified wood is approximately 60 million years old. The plaque on top of pen set verifies this, along with stating it is a piece of Petrified Wood. It is 8.56" x 4.13" x 2.5". The beauty of this piece is the top is polished and the bottom is left natural. The other important part of this piece is the completely intact bark on the front and back. The grain is outstanding.