Thread: J-Nat club

Originally Posted by Vasilis

The left, pure one looks great. By the way, I'm avoiding stones with these red/brown lines, although everyone says they are safe. Are they cracks, or maybe inclusions of softer material? Sorry if I'm getting off topic.

All of the stones in the picture work just fine with razors. They feel completely different too. The rusty lines should not be toxic, and are very common for Okudo Suita stones. There is always the possibility of toxic lines, but that is there for any Jnat.

Beautyfull stones Stefan My only suita is a koppa from Yamashiro mate 330 Once i get drunk and i bid on it .
It is hard and works amazing on chisels . knifes and scrapers It isnt very pure as yours but those are best prefinishers for razors
Yours looks very pure Quality slabs . no doubt

Arent the white stones better and faster They call them Shiro arent they White , i think
Is that the top class for the suita stone

Originally Posted by mainaman

All of the stones in the picture work just fine with razors. They feel completely different too. The rusty lines should not be toxic, and are very common for Okudo Suita stones. There is always the possibility of toxic lines, but that is there for any Jnat.

I don't think these lines are unique on Okudo stones. I have seen them on Shinden, Ohira, and others as well. Mostly Ohira. From what I understand, it depends on the depth the stone comes from; the deeper, the more likely to have these lines, or something along these lines, again, I'm far from expert, I'm writing what I've read and observed.
By the way, does anyone have a habutae suita? I would like to see photos of these, they are the top of the top, again from what I have read.

Rusen, like every single natural stone, all are unique, the color does not make it faster or slower. A yellow can be faster than a white. But a soft one will probably be faster than a harder, same "type of strata" from the same quarry, no slurry.

The rusty lines are just that - actually the edges of 'skin' layers. They're usually not toxic unless they contain a thick enough glassy layer so that the glass is strong enough to resist wearing down with the rest of the stone. I recently picked such a line in a karasu because it stuck up above the surface. In suita, you can also find sandy spots in the layers.

In the first image, you can see the patch of iron rich skin on the side of the suita that is the suji line. The stone below it is likely an akepin or soft tomae and came as-is and was probably hit or dropped and it broke along the lines. You can see the traces of namazu along the edges similar to the other lines.

One of the signs of a true maruka and better grade stamped stones is that they will have no lines of this type though they may possibly have a closed, non-absorbent, non-reflective line.

Cheers, Steve

Originally Posted by Vasilis

I don't think these lines are unique on Okudo stones. I have seen them on Shinden, Ohira, and others as well. Mostly Ohira. From what I understand, it depends on the depth the stone comes from; the deeper, the more likely to have these lines, or something along these lines, again, I'm far from expert, I'm writing what I've read and observed.
By the way, does anyone have a habutae suita? I would like to see photos of these, they are the top of the top, again from what I have read.

Rusen, like every single natural stone, all are unique, the color does not make it faster or slower. A yellow can be faster than a white. But a soft one will probably be faster than a harder, same "type of strata" from the same quarry, no slurry.

I am not an expert either, I did not say the lines were unique for Okudo just they are very common. The stone I posted is most likely an Ohira, I can't read the kanji so I can't say. I do not think it reveals the mine but I may be wrong.

Originally Posted by Steve56

One of the signs of a true maruka and better grade stamped stones is that they will have no lines of this type though they may possibly have a closed, non-absorbent, non-reflective line.
Cheers, Steve

Mine came with similar lines and also has all the stamps of a Maruka. It is a great stone, no issues.

Attachment 77432

Arent this stone especialy stamped for JNS They are very good stones , but they are on my opinion entirely another stones from the old Maruka with the stamp on the side .
Anway they are very good and hard stones . It is intresting how the old stock stonese difere significantly from the new ones .Anyway i love those green stones with white or wellow stripes They are just gorgeous

Originally Posted by RusenBG

Arent this stone especialy stamped for JNS

I got mine from So Yamashita.

So-San's father in Japan is a respected stone dealer and expert in Japanese stones. It may well be that Max buys stones from him.

Cheers, Steve

Originally Posted by RusenBG

Arent this stone especialy stamped for JNS They are very good stones , but they are on my opinion entirely another stones from the old Maruka with the stamp on the side .
Anway they are very good and hard stones . It is intresting how the old stock stonese difere significantly from the new ones .Anyway i love those green stones with white or wellow stripes They are just gorgeous

The surface stamps are Maruichi and can be seen on many stones that are not sold by JNS.
Maruka is the side stamp that was used by Kato family when they mined Nakayama.
Here is one Nakayama that I used to own with all the stamps on it, got it from So many years ago.