Mikawa Nagura 2030g This example is middle of

This example is middle of the road in terms of friability and cutting speed

This particular one is harder than average

The light colour is desirable and the wholesale cost of the stone was increased as a result

This example is whiter than usual

Dimensions: 205 x 75 x 13mm (8mm abrasive layer)

Mikawa Nagura 2030g This example is middle ofMikawa 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