Naniwa Aotoshi 2000 Grit "Green Brick" Sharpening Stone - IR-0260

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Naniwa Aotoishi "Green Brick of Joy" 2K Grit Japanese Whetstone Sharpening Stone, NO Stand, 21cm x 7cm surface, 5.5cm thick. Made in Japan.

This fine stone is a good choice for finishing off German knives, or for regular maintenance of any other German or Japanese knife where you don't necessarily want a super polished edge. This is the smoothest many people will ever need to use, especially for German knives or any knife made with standard stainless steel.

This is a "non-series" stone, so it's not really a Super Stone, Pro, or whatever... it's very thick, and it just has a certain something to it that many serious knife sharpening experts love, hence the "Green Brick of Joy" nickname!

A 5-minute soak prior to use is perfect for this stone (it's not a true splash-and-go like the Super Stones and Pro Stones). Don't leave it soaking for hours or more though.

Warranty: 90-day warranty against manufacturing defects.


Customer Reviews

Based on 5 reviews
Amazing stone all the way

I'm now into my 11th stone trying out different things and I must admit, this stone is really out of the ordinary. I love it's feeling, it's feedback and it's polishing effect on my blades.

Basically I have replaced my maintenance on knives AND sharpening needs (if not too blunt) by this stone, and I feel like it's going to last forever due to its thickness and very little need to flatten it so far.

It does load up a bit but it's not a big problem imho

Awesome block of Green

This thing is awesome. I just had to own it.. very happy with it. Great general sharpening stone.. I think if you were to just get 1 stone for maintaining sharp knives, this could be a good one if you do it regularly.


Really nice stone
it has a nice silky “bite” to it
and will last a llllong time given its thickness !
love it

Buy this for your kids

I've used this stone about a dozen times in 2 weeks for various knives and it still looks brand new. Decent slurry and quick to sharpen. This stone will probably outlive me.


Works great. High enough grit for most things.

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