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These are the natural stones I have tested on tools: chisels, plane blades and other woodworking steel. For tools you usually want a hard stone with a clean flat surface and no lines, and that is what I put in here.
Each stone has its own description with relative hardness and best use. If there are toxic lines or inclusions I write it. If nothing is written, there are none.
Naguras and flattening stones are in Finger Stones and Naguras. If you are not sure which stone fits your tools, email me before you buy.
How to use a natural stone | Grit, fines and hardness explained | Read Stone Recommendations
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Products List
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Umajiyama Lv 2,5 (a3733)
€692.42Umaji Yama located near Ohira mine So produced similar stones as Ohira just bit softerNo toxic lines or inclusions at allAmazing for knives and tools Beautiful clean stone -
Umajiyama Tenjyou Suita Lv 2,5 (a3730)
€846.29Umaji Yama located near Ohira mine So produced similar stones as Ohira just bit softerNo toxic lines or inclusions at allAmazing for knives and tools Beautiful clean stone Collector Grade -
Yaginoshima Asagi lv 4 (a3729)
€384.68Yaginoshima Asagi Quite easy stone to use and gives amazing edge Can be used without Nagura but with Nagura will be much easier for the Kasumi finish Very fine stone and can be used for Razors as... -
Yaginoshima Asagi lv 4 (a3728)
€384.68Yaginoshima Asagi Quite easy stone to use and gives amazing edge Can be used without Nagura but with Nagura will be much easier for the Kasumi finish Very fine stone and can be used for Razors as... -
Yaginoshima Asagi lv 4 (a3727)
€384.68Yaginoshima Asagi Quite easy stone to use and gives amazing edge Can be used without Nagura but with Nagura will be much easier for the Kasumi finish Very fine stone and can be used for Razors as... -
Yaginoshima Asagi lv 4 (a3726)
€384.68Yaginoshima Asagi Quite easy stone to use and gives amazing edge Can be used without Nagura but with Nagura will be much easier for the Kasumi finish Very fine stone and can be used for Razors as... -
Ozuku Mizu Asagi lv 5+ (a3720)
€538.55Very uniform, very hard and super fine Ozuku Finisher !Without any toxic inclusions, cracks or lines at all ! Very clean stone Not much to say then its perfect final finisher for razors !!... -
Ozuku Mizu Asagi lv 5+ (a3719)
€538.55Very uniform, very hard and super fine Ozuku Finisher !Without any toxic inclusions, cracks or lines at all ! Very clean stone Not much to say then its perfect final finisher for razors !!... -
Ozuku Mizu Asagi lv 5+ (a3718)
€538.55Very uniform, very hard and super fine Ozuku Finisher !Without any toxic inclusions, cracks or lines at all ! Very clean stone Not much to say then its perfect final finisher for razors !!... -
Oohira Lv 3,5 (a3715)
€492.38Old stock Ohira Fast and medium hardness stone quite easy to use feels very smooth and make some black very fastCan be used with or without Nagura and make clearer Kasumi finish No Toxic lines or... -
Aiiwatani Kiita Koppa Lv 2,5 (a3703)
€200.03[never coming back] Aiiwatani Located north for Kyoto along with Takashima but makes finer and harder stones Very nice feel, smooth and soft very good for Kasumi finish Produce super nice finish and... -
Oohira Lv 3 (a3691)
€461.61[never coming back] Old stock Ohira Fast and medium hardness stone quite easy to use feels very smooth and make some black very fastCan be used with or without Nagura and make clear Kasumi finish No... -
Shoubudani Kiita Lv 3 (a3685)
€615.48[never coming back] Shoubudani is mine super close to Nakayama and produced similar stones as Nakayama usually super fine and hardSometimes in Japan shoubudani stones have been sold as... -
Shoubudani Akapin Lv 2,5 (a3683)
€738.58[never coming back] Shoubudani is mine super close to Nakayama and produced similar stones as Nakayama usually super fine and hardSometimes in Japan shoubudani stones have been sold as... -
Aiiwatani Kiita Koppa Lv 2,5 (a3681)
€138.48[never coming back] Aiiwatani Located north for Kyoto along with Takashima but makes finer and harder stones Very nice feel, smooth and soft very good for Kasumi finish Produce super nice finish and... -
Aiiwatani Kiita Koppa Lv 2,5 (a3680)
€107.71[never coming back] Aiiwatani Located north for Kyoto along with Takashima but makes finer and harder stones Very nice feel, smooth and soft very good for Kasumi finish Produce super nice finish and... -
Aiiwatani Lv 5 (a3670)
€307.74Aiiwatani Located north for Kyoto along with TakashimaThey produce some of Harder and finer stones then ussual from that region. Very nice feel, smooth and hard Can be used as finisher for razors... -
Mizukihara Uchigumori Lv 3 (a3666)
€1,692.57Famous Uchigomori from Mizukihara just on the other side of Ohira mine and comes from same mountain With Lots of Range pattern and very light gray color Crazy good to use for Kasumi finish and... -
Nakayama Maruichi Kiita Kamisori Lv 5 (a3662)
€877.06Super beautiful Old Stock Nakayama from Maruichi, Kiita with Some Asagi pattern as well Very Hard and super smooth stone ! Without any toxic Lines or inclusions at all !Final finisher for Kamisori... -
Asano Koma Nagura (a3653)
€892.45Asano Koma Nagura 1270g Asano Koma Nagura is Rare in small size but this Huge bench sized stone is crazy Rare And I think it is first time I got Batch like That with Huge Koma Nagura from Asano I...
