It's certainly made from clay. It's not used to eat from.
The manufacturer's pieces are highly decorative, and serve a function.
Re the photos, I've cropped in close to make this a challenging challenge. Perhaps the amount of cropping has over enlarged the image which loses some of the sharpness.
The manufacturer is from Stoke on Trent, and has a museum at the current factory.
The designs are internationally renowned, if not iconic.
I'm reposting the pictures.
The above is part of the base.
This is part of the top.
This is the top in full. (Sharp enough?) the image above this one is a part of the final image in this set.
Sent from my iPad 1 using iPF - Greetings