The wood is Red Oak. I used a black patinating wax rubbed into the grain to cause what you see. The next photo shows the rays of the oak which are not affected much by the wax. The open grain of this Red Oak is great for this type of treatment. Later the vessel was buffed with just a cotton flannel wheel.
The size of this piece is 9" dia x 6.5" tall. I turned it green all the way. It's less than 1/8" thick and is still moving a bit. The bottom is round and the vessel sits where it wants.