37432899___Straight_Razor_Place_Library__Comments
[Name] Honyama Stones(Mt Shoubudani) [Grit (approx.)] Amakusa(800), Binsu(1K), Aoto(2K), Awaseto(8K), Awaseto Oishi(12K) [Typical use] finishing/polishing [Comments] 
Most famous natural waterstones in japan, both Nakayama quarry and Shoubu quarry are Honyama. These are of excellent quality, but are very expensive. Only Amakusa(800) and Binsu(1K) are fairly cheap. It yet needs to be established if it can give a finer edge then the coticule or esher to certain steels (e.g very hard steels) to justify its price. This type of stone has a long tradition for sharpening Katanas and Sushi knives.
Hones - comparison table - Straight Razor Place Library
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