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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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Nakayama Maruka Kiita Lv 5+ (a3734)
HKD13,542.40Old stock rare Nakayama Maruichi Maruka Kiita Very Hard and smooth stone ! Without any toxic Lines or inclusions at all !Final finisher for Kamisori, Razors or fine tools !Can be used on Knives... -
Umajiyama Lv 2,5 (a3733)
HKD6,094.08Umaji 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 Kiita Lv 3 (a3732)
HKD8,125.44Umaji Yama located near Ohira mine So produced similar stones as Ohira just bit softer, This one however is quite fine and medium Hardness No toxic lines or inclusions at allAmazing for knives and... -
Umajiyama Akapin Lv 2,5 (a3731)
HKD7,448.32Umaji 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 -
Umajiyama Tenjyou Suita Lv 2,5 (a3730)
HKD7,448.32Umaji 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)
HKD3,385.60Yaginoshima 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)
HKD3,385.60Yaginoshima 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)
HKD3,385.60Yaginoshima 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)
HKD3,385.60Yaginoshima 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... -
Nakayama Maruichi Maruka Kamisori Lv 4,5 (a3725)
HKD5,416.96Smaller Size but perfect for razors, beautiful Old Stock Nakayama Kiita Maruichi Very Hard and super smooth stone ! Without any toxic Lines or inclusions !Final finisher for Kamisori and Razors ! It... -
Nakayama Maruichi Asagi Kamisori Lv 5+ (a3724)
HKD4,739.84Smaller Size but perfect for razors, beautiful Old Stock Nakayama Asagi Maruichi Very Hard and super smooth stone ! Without any toxic Lines or inclusions !Final finisher for Kamisori and Razors ! It... -
Nakayama Maruichi Asagi Kamisori Lv 5+ (a3723)
HKD5,416.96Smaller Size but perfect for razors, beautiful Old Stock Nakayama Asagi Maruichi Very Hard and super smooth stone ! Without any toxic Lines or inclusions !Final finisher for Kamisori and Razors ! It... -
Ozuku Mizu Asagi lv 5+ (a3720)
HKD4,739.84Very 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)
HKD4,739.84Very 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)
HKD4,739.84Very 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 !!... -
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Ozuku Karasu lv 5+ (a3716)
HKD10,833.92Very hard and super fine Ozuku Karasu for final finishing razors.With very unique and beautiful Karasu pattern It feels super smooth and give perfect smooth edge ! They getting crazy rare... -
Oohira Lv 3,5 (a3715)
HKD4,333.57Old 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... -
Oohira Lv 3 (a3713)
HKD4,333.57Old 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 Asagi Koppa Lv 5 (a3709)
HKD677.12[never coming back] Aiiwatani 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... -
Aiiwatani Kiita Koppa Lv 2,5 (a3703)
HKD1,760.51[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...
