Mikawa Nagura 1288g This particular stone is middle

This particular stone is middle of the road in terms of hardness and friability

it is capable of erasing #120 diamond plate scratches within 30 seconds

It is also finer and faster cutting than average

This example is whiter than usual

between 50-60%

Mikawa Nagura 1288g This particular stone is middleMikawa Nagura are 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 recommend end users flatten the