Description
This is a natural Mikawa Nagura Koma Chūjima from Japan, traditionally used as a slurry stone rather than as a main sharpening stone.
Mikawa Nagura stones are used by rubbing them on the surface of a base whetstone to create fine polishing slurry. This slurry helps improve smoothness, control the polishing feel, and refine the surface finish during sharpening or polishing work.
The Koma type is known for producing a fine and smooth slurry, making it suitable for delicate polishing stages. Chūjima refers to the natural striped layer pattern seen in the stone, giving each piece a unique appearance.
This stone is recommended for users who want to create polishing slurry on natural or suitable synthetic whetstones, especially for refining kasumi finishes, surface preparation, and controlled polishing work.
- Brand: Tanaka toishi
- Producing Area:Mikawa
- Weight: 201g









