These are the natural stones I have tested on razors: mostly hard finishers from Nakayama, Ozuku, Aiiwatani, Kizuyama and Oohira. The hardness is written as Lv in each stone name, and for razors most people end up between Lv 4 and Lv 5+.
Every stone has its own description with hardness and best use. If a stone has toxic lines or inclusions I write it there. If nothing is written, there are none.
Picking a razor stone is personal. Email me before you buy, tell me which razors you have and what you sharpen on now, and I will help you find the right one.
How to hone razors on a Jnat | Nagura guide | Read Stone Recommendations
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Ozuku Mizu Asagi lv 5+ (a3720)
CNY4,064.45Very 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)
CNY4,064.45Very 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)
CNY4,064.45Very 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 Karasu lv 5+ (a3716)
CNY9,290.16Very 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... -
Aiiwatani Asagi Koppa Lv 5 (a3709)
CNY580.64[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 Lv 5 (a3670)
CNY2,322.54Aiiwatani 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... -
Nakayama Maruka Asagi Lv 4,5 (a3664)
CNY6,619.24Super beautiful Old Stock Nakayama Maruka Asagi Very Hard and super smooth stone ! Without any toxic Lines or inclusions at all !Final finisher for Kamisori and Razors ! It is very difficult to find... -
Nakayama Maruka Maruichi Asagi Kamisori Lv 5 (a3663)
CNY8,128.89Super beautiful Old Stock Nakayama Maruka from Maruichi Very Hard and super smooth stone ! Without any toxic Lines or inclusions at all !Final finisher for Kamisori and Razors ! It is very difficult... -
Nakayama Maruichi Kiita Kamisori Lv 5 (a3662)
CNY6,619.24Super 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)
CNY6,735.37Asano 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)
CNY10,451.43Asano 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)
CNY13,935.24Asano 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)
CNY3,832.19Very 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... -
Kizuyama lv 3,5 (a3596)
CNY8,709.53Very 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)
CNY16,257.78Very 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)
CNY5,806.35Very 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)
CNY4,645.08Old 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... -
Kouzaki Lv 5 (a3510)
CNY1,741.91Kouzaki 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 Asagi Kamisori Lv 5+ (a3496)
CNY9,290.16Super beautiful Old Stock Nakayama Asagi Maruichi Very Hard and super smooth stone ! Without any toxic Lines or inclusions at all !Final finisher for Kamisori and Razors ! It is very difficult to... -
Nakayama Maruichi Kiita Kamisori Lv 5 (a3488)
CNY8,709.53Super 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...

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