Along Lower Mainland river basins I find a lot of what I assume is petrified wood, with the odd piece from the ocean. Some look perfectly like wood and are very striking, but many look quite dull and are harder to positively identify. But tumbling stones can bring out the beauty in them.
I put this petrified wood batch on coarse grind in my rotary rock tumbler last week. I pulled a few pieces that were done enough for now and put some others in. These rough petrified wood pieces don’t look too hot in this picture.