Mikawa Nagura 1860g This particular one is harder

This particular one is harder than average

there is still a large surface available for use

This particular stone is hard and not as friable as other examples

the price has been reduced to 1

Dimensions: 228mm x 80mm x 51mm

Mikawa Nagura 1860g This particular one is harderMikawa 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