It is not clear about the Origin of the Akama Inkstone, but the History from at least 600 years is thought to have.
The uncut stone of the Akama Inkstone is said to be the nature of a rock similar to "a quality ink stone of tuanshi stone" of the Chugoku which is famous in red-brown 輝緑凝灰石.
The Most is Crafts by the manual labor, and even Now is appointed in the traditional Craft of the country.