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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Mizukihara Uchigumori Lv 3 (a3666)
HKD14,776.47Famous 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)
HKD7,656.90Super 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)
HKD7,791.23Asano 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... -
Asano Koma Nagura (a3651)
HKD12,089.84Asano Koma Nagura 2000g 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... -
Asano Koma Nagura (a3650)
HKD16,119.78Asano Koma Nagura 2640g 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... -
Tanaka Ozuku Mizu Asagi lv 5+ (a3607)
HKD4,432.94Very rare Old Stock Ozuku from Tanaka Toishi from Kyoto, those are old stock and he do not have any more of those Without any toxic inclusions, cracks or lines at all ! Very clean stone Not much to... -
Atagoyama Huge Lv 3,5 (a3601)
HKD16,119.78Old stock Atagoyama, Super big stone and will be crazy hard to fine Fast and Medium Hardness stone with very light color feels super smooth and creamy Very nice stone for fine Kasumi finish and also... -
Oohira Ooban Lv 3,5 (a3600)
HKD9,403.21Old stock Ohira Ooban Ooban is size of the stones and very rare for Japanese Natural stones Fast and Medium Hardness stone Very nice stone for fine Kasumi finish and also makes crazy sharp and fine... -
Oohira Ooban Lv 3,5 (a3598)
HKD11,418.18Old stock Ohira Ooban Ooban is size of the stones and very rare for Japanese Natural stones Fast and Medium Hardness stone Very nice stone for fine Kasumi finish and also makes crazy sharp and fine... -
Oohira Ooban Lv 3,5 (a3597)
HKD11,418.18Old stock Ohira Ooban Ooban is size of the stones and very rare for Japanese Natural stones Fast and Medium Hardness stone Very nice stone for fine Kasumi finish and also makes crazy sharp and fine... -
Kizuyama lv 3,5 (a3596)
HKD10,074.86Very Rare Kizuyama Stone That super light color and amazing for knives Makes crazy sharp edge but also good for very fine Kasumi finish Very clean stone without any toxic lines or inclusions... -
Kizuyama Ooban lv 4 (a3594)
HKD18,806.41Very Rare Kizuyama Stone with Amazing pattern parallel stripes of different colours ! Ooban is size of the stone and they are crazy rareVery smooth and very fine stone ! on Harder side You don't... -
Shinden Lv 4,5 (a3586)
HKD6,716.58Very rare That I get Shinden now a daysShinden makes some harder stones that tool users love make super fine edge Can be used for Razors and Knives, Best with Nagura for knives Shinden stones is very... -
Oohira Lv 4,5 (a3582)
HKD5,373.26Old stock Ohira Fast and harder stone Can be used for knives and even for razors Feels very smooth and make some black very fastCan be used with or without Nagura but best with Nagura for knives and... -
Ohira Range Suita Lv 3,5 (a3565)
HKD17,463.10I rarely get them now but got a chance to get Ohira Range Suita white with some range patter Very smooth and feels super nice. Medium hardness not to soft not to hard ! perfect for tools and... -
Aiiwatani Koppa Lv 2,5 (a3561)
HKD2,149.30Aiiwatani 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 quite easy to... -
Kouzaki Lv 5 (a3510)
HKD2,014.97Kouzaki is very Famous for they Super hard Aotos. However this one is super fine lv 5 stone finisher for razors Amazing finisher if you want to try something new and different ! :) Super clean and... -
Nakayama Maruichi Kiita Kamisori Lv 5 (a3488)
HKD10,074.86Super beautiful 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 and Razors... -
Binsui
HKD940.32This Binsui stones is quite soft and very easy to use, create slurry very fast and make amazing toothy edge Approx. 1-2k grit Picture is just example -
Ikarashi Flat
HKD1,477.65Medium grit stone from Niigata, Sanjo I have tested this stone for some time now and i think it is very good 1000 -2000 stone ! Very fast for natural and feels very good, it have super feedback that...

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