Very Large, Polished Petrified Wood Round. This round is from the old Spurlock Ranch site, north of St. Only about 3% of the petrified wood, out of the Chinle rocks, is Schilderia. Largest Width: Approximately 19 5/8 inches. Largest Height: Approximately 13 inches. Thickness: Approximately 7/8 inch. Weight: Approximately 16 to 17 lbs. The item “Very Large, Polished Arizona Petrified Wood Round-Schilderia” is in sale since Saturday, January 18, 2020. This item is in the category “Collectibles\Rocks, Fossils & Minerals\Fossils\Vegetation\Petrified Wood”. The seller is “crescent” and is located in Altadena, California. This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Canada.