This one is around 8.2 inches by 8.9 inches at the widest parts. Approximately 0.9 inch thick.
I haven't tried to polish this up or anything but it probably could become shinier if somebody decided to do that. Some of the pictures where it's clearer or shinier is because of how I positioned the lighting in the room.
The one picture, I used an image flipping app to make it easier to read what the block says instead of the normal reversed way. See pictures for current condition.