This is a polished specimen of a "PETRIFIED WOOD ROUND" that came from ZIMBABWE, AFRICA. This is from the Mesozoic Era in the Triassic Period dating it back 205 to 241 million years. The center is where the wood has rotted out and crystal has formed around the opening. This measures approximately 5" x 5" x 1/2" Successful bidder pays .00 S&H.