Hardness: 8.5
Fineness: 8.5
Cutting Strength: 2

NOTE: Lines touches a bit so you need to either avoid or dig a little to sharpen a 70mm plane blade. Both sides are flat, and the back seems to have less lines.

Yaginoshima is located east of Oohira, North of Kouzaki, this mine has been under the control of Akechi Mitsuhide who has overthroaned the famous first ruler of entire Japan Oda Nobunaga. The stones were supplied to various woodworkers and sword polishers within his district. Suita from Yaginoshima is the most famous (along with various Namito), and it has a strong cutting strength with smooth texture. This mine has been closed long time ago.