I think it’s petrified wood? The white spot on top is just an old sticker, needs a little cleaning, otherwise great shape. Measurements are often in the pictures. Don’t be afraid to make an offer, I don’t mind some haggling! In many of my listings my pictures are my only description, so please look them over well! Please check my other auctions for lots of different and odd items. Never hurts to make an offer on something you like! I try to have new items every couple of weeks. Any questions, please ask. I’m always adding new stuff, you never know what you’ll find! Don’t forget to leave feedback!! Help support small sellers!