Mikawa Nagura 1165g There are also black spots

There are also black spots and small su at the top of the stone

or using a diamond plate to slurry the stone

Weight: 1923g

one of the more aesthetic examples of this type of stone

For optimal performance

Mikawa Nagura 1165g There are also black spotsMikawa 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