Yep, what he said,
the wood's grain is the feature here. The shape and the rim detail do a nice job of presenting and accenting the wood without competing for attention. Makes it interesting.
Really nice!
There's an interesting trick of the light going on here (I think). The bottom on the right seems to have a flat spot in the curve that is not carried over on the bottom left. I've been staring at this trying to figure out if it's the shadow or just my imagination.
Knowing your work I had no doubt it was a photo illusion. I've had some pics do the same thing, but usually only when I was using one light source. It would be nice to understand it but I probably ain't that smart.