<page_title> List of U.S. state minerals, rocks, stones and gemstones </page_title> <section_title> Table of minerals, rocks, stones and gemstones </section_title> <table> <cell> Washington <col_header> State federal district or territory </col_header> </cell> <cell> A sliced section of a petrified wood log showing exterior fossilized bark and black, white, red and yellow agate in the interior. <col_header> Gemstone </col_header> </cell> </table>
Washington state's gem is petrified wood.