Gransfors Bruk Ceramic Axe Stone
As opposed to a natural stone, a ceramic sharpening stone can be made to have a more precise grain size. The stone has a round, flattened shape with bevelled edges to give a round transition. The fine side makes up 2/3 of the thickness, as this is the side that usually wears the most. The stone is normally used with water, but can also be used dry.