What kind of tree could this have possibly come from?

[Ago13]

I was wondering what tree this piece of petrified wood could have possibly come from and maybe a rough estimation of it’s age? It was found in Stockton, California by my grandfather. According to him, it was found in his backyard when they were first building the house and tearing up the ground in the backyard? He’s had it for a long time and recently gave it to me, since I really love fossils and Paleontology. I included some pictures with and without flash and the top and bottom of it. It’s 7 inches long. I also recently cleaned it, so it would be easier to identify it and see all of the details of it.