New JNAT and unknow stone

Hello, I got this stone on Ebay a while ago, in separate transactions, the smaller is Jnat, I get it from Japan, not from 330mate, from a different guy, is a hard stone, very fast with slurry, and finishing is about 8-10K. I get good shave from this stone. Do you have any ideea what it is?
The other stone, is from USA, the hardest stone I have ever know, is a green-blue with some darker stripes.
This stone was very flat, with just a little dishing in the middle. I can't put a grit on this one , it is very hard to raise slurry, and it come with a slurry stone, from same stone. The seller don't have a clue for what was used.
Thank you very much for your input.

I've got a jnat with the same looks, mine is an Ohira, fast and smooth, mine I would say is like 6-8K.
It gives up slurry on it's own if you press it but if you lighten up you can go with pure water.
Nice prefinisher.

Thank you, mine is a little harder, it not slurry by herself. It is a nice 6x3 piece. The green one is the mystery.

Yeah, if yours is harder then it's probably a little finer.
Here's my rock!

Attachment 119065Attachment 119066

Nice rock, same like mine. Thank you

Quote:

---

Originally Posted by Lemur

I've got a jnat with the same looks, mine is an Ohira, fast and smooth, mine I would say is like 6-8K.
It gives up slurry on it's own if you press it but if you lighten up you can go with pure water.
Nice prefinisher.

---

The Japanese in the picture looks exactly like my Aoto I bought from Maxim at Japanese Natural Stones. But I am no expert so I might be mistaken

Red Aoto +++

Best regards

Peter

It might look like it but i know for sure it's not.
I've got a "Red Aoto" right next to me. ;)

How do you like the "Red Aoto" then, what do you use it for?

Quote:

---

Originally Posted by Lemur

It might look like it but i know for sure it's not.
I've got a "Red Aoto" right next to me. ;)

How do you like the "Red Aoto" then, what do you use it for?

---

Hehe, it is always hard to judge colours on a computer screen :-) I like it very much. My initial experiences are that it gives a smooth, clean edge very fast but I haven't had time to play with it that much unfortunately even though I have had it for some time. I use it with my kitchen knives :-) And you??

Quote:

---

Originally Posted by olsen

Hehe, it is always hard to judge colours on a computer screen :-) I like it very much. My initial experiences are that it gives a smooth, clean edge very fast but I haven't had time to play with it that much unfortunately even though I have had it for some time. I use it with my kitchen knives :-) And you??

---

I'm sorry to say I'm not that fond of it, I've tried it with kitchen knives, white, blue, super blue, SLD, old Swedish carbon and every kind of stainless, it's slow, very slow.
As soon as I get any water on it it gives lots of slurry, way to much of it.
For example my Hideriyama, also a soft stone, if way faster to remove any type of steel and still gives a much finer edge and polish.
Maybe It's just me who doesn't get along with it but the only thing I use it for now is as nagura to wake up other stones.
So I don't really know what to say about it, if you try your stone any more please let me know what you think, and anybody else of course .

Thank you , what about the big stone? Any ideeas?

Any ideea what the green one is? It is very hard, don't drink any water, hard to slurry.Thank you

Sorry, can't help you there!
But if you get some more pics, wet/dry, slurry and slurry with steel in it maybe someone else can.
Good luck!

I really wish I had the patience for Jnats, I have tried quite a few and could never get the results I was looking for. I have 2 coticules that I have pretty much mastered and they give me the best finishes I could want so I stick with em. I am thinking about a nani 16k or something like that, maby a shaptonn.

Quote:

---

Originally Posted by livio

Thank you , what about the big stone? Any ideeas?

---

I have few of simmilar hones to yours. They all were acquired in UK ans as you wrote realy hard to lap. Lapping CFs and LIs is a doddle comparing with this one. The only hone simmilar to lap is Rozsutec. I was trying (and few others) to find out what it is and so far without any real joy. At least that dream is still on Green hard hone with Blue stains with mysterious qualities as used by Sheffield cuttlers.

Thank you. So is a blue stone with green splashes. It may be a cutlers green?Is that stone really exist?I bought this stone in USA, and was dished in the middle. So is maybe a knife sone? I can't imagine dishing this stone with razors, is too hard.

Remember that fine stones never were privilege for razors. The market would be too small. All fine tools deserve a decent stones. For that reason we can still find them arround as they were manufactured for mass market. And as about CG so far it is closest I got to it. Enjoy the hone.