Mikawa Nagura 1759g This particular one has a

This particular one has a very white surface with light orange streaks

We have not noticed the release of any gritty particles in use

It can be slurried with a diamond plate for ease of use

Weight: 1191g

Useful for hand sanding hard or wear resistant steels

Mikawa Nagura 1759g This particular one has aMikawa Nagura are Tuff stones, a type of igneous rock formed from lithified volcanic ash. Mined in Aichi prefecture starting 700 years ago, they have been used in traditional Japanese sword polishing progressions. The mine has been closed since the 1970s. We receive the stones from the wholesaler with rough chisel marks on both sides, and flatten them in our workshop. Although we have made a good effort to provide a flat surface for usage, we strongly