I need a bowl with standard dimensions to be made as a prototype.

Design details: This bowl which I will provide dimensions and more details later needs to be made either by a 3D printer or made by any conventional pottery methods.
If it is 3D printed then needs to be made of some rigid plastic looking like china or porcelain and in white or cream colour.
If you are going to use conventional pottery methods then china or porcelain and again in white or cream. But it must be made accurately.
Messages to communicate through the design: look realistic china or porcelain bowl.
Ideas for the visual style: Look like any china or porcelain bowl.
Extra notes: The maker needs to be based in UK as the prototype is going to be posted to me.
Whichever method you use its surface needs to be smooth.