Natural medium sharpening stone (nakato) from the Tanba area of Kyoto Prefecture, known as Shohonzan Tanba Aoto. It works in a grit range of #2000 to #6000, produces mud readily, and shows no strata features, with veins that do not affect use.
Hardness: 2.5/49
Dimensions: Length 178 mm, Width 75 mm, Height 25 mm (maximum dimensions)
Weight: 785 g
Please refer to the photos for the item's current appearance and condition.
