Products Tested & Guaranteed Free Product Support Same Day Shipping and Free Shipping on Orders Over $99 Products Tested & Guaranteed Free Product Support Same Day Shipping and Free Shipping on Orders Over $99
Naniwa Aotoishi Sharpening Stone

Naniwa Aotoishi Sharpening Stone

Item # Aotoishi
Price: $74.99
In Stock

  • Green Brick Of Joy
  • 2000 Grit
  • Over 2" Thick!


The Green Brick of Joy

The Aotoishi stone from Naniwa has developed a dedicated following among knife sharpeners. The large, brick-like shape ensures a long lasting stone and its efficient sharpening has made it a favorite of many. The name Aotoishi, printed in characters on the stone, refers to its color and identifies it as a whetstone. Among its many fans though, the Aotoishi is often simply called "The Green Brick of Joy".

General Purpose Stone

The Aotoishi is 2000 grit, making it a jack-of-all-trades stone. It is coarse enough to put an edge back on a knife that is only a bit dull, and yet fine enough to leave a good cutting edge as well. Whether you are looking for a single stone to maintain your knives, or for a middle grit stone to add to your sharpening tool kit, the Aotoishi has it covered.

2 1/2 Times Thicker

Like other Naniwa stones, the Aotoishi has a foot print of 8-1/4" x 2-3/4" (210mm x 70mm). But unlike all the others, the Aotoishi is 2-1/8" thick (55mm). That's more than 2-1/2 times thicker than the 3/4" (20mm) stones. That extra thickness ensures that this work horse of a stone will be around for a very long time indeed.

A Joy to Use

It's easy to see how the Aotoishi got its nickname, it really is enjoyable to use. It should be soaked prior to use, but it is not as thirsty as many soaking stones and doesn't have to be immersed long. 5 minutes or so is generally plenty to get it saturated and ready to go. This stone has a not-too-hard, not-too-soft feel that gives good feedback when sharpening, and forms a slurry quickly during use. It's standard footprint fits in a stone holder well, but it is massive enough to stay put on its own too, and the extra height provides all the knuckle clearance you could ask for.

Q. Which series of Naniwa stones does the Aotoishi belong to?

A. The Aotoishi is unique and belongs to a series of its own. A series with a single stone.

Q. Did the Aotoishi get new packaging?

A. Yes. While Naniwa previously packaged it in a plain cardboard box, the Aotoishi now sports a bright blue box with Japanese characters that match the ones on the stone itself.

Need more information?

Call a Product Specialist

Monday through Friday, 8 a.m. - 4:30 p.m. CT
Phone US: 1-800-351-8234
Outside US: +1-608-203-1129

Email a Product Specialist
Emails are answered Monday through Friday
Received my Sharpening System today,(Norton IM83) and I've got to tell you that I am excited about using this product. I've been in the meat cutting business for 45 years, and as you can imagine, I've used allot of different types and styles of sharpening equipment. I have had 3 Norton Multi-Oil Stone units in my lifetime, and then I see this IM83 and I think that this is what I need to carry with me when and wherever I go. I just LOVE this little box full of expertise equipment to keep me sharp and at a razors edge. Thank you for the service, it was fast and easy, and I received it within 3 days of ordering. I know knives and how they work, and I can't wait to start putting that edge on my "other" knives I own.
Karl L, Omaha, NE