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The stone is blue, but it has rust brown spots. It's not an amakusa, its an aoto, just an aoto with rusty looking areas.


I haven't seen them graded to 3K, is there a specific color of layer...

I wouldn't expect anything else, really. They have BIN listings on the stones, that's probably where the cleanest ones get sold.

I just checked against my Ch12K, the faces did not scratch, but I lapped one edge to use and it did score the 12K. There is a vein running diagonally across the side, that must have been what did...

Mine also has rust colored spots and small veins, but they seem soft. Had to lap out a fair bit because there were also small cracks and some shallow divots. Without slurry, I wouldn't attempt to...

maybe customs. USPS could track the label number, and it never advanced past NY for a couple weeks. I asked at the local office, and the woman there suggested I wait til after that weekend, and...

I got air mail shipping, took 3 days to go from Japan to New York. Unfortunately, the post office lost it for two weeks.

Aoto is a blue stone. Ao means blue

I lapped one face and one side, and used the side because the razor has such a prominent smile. I soaked the stone for a few minutes prior, but it is so thirsty that the surface doesn't stay fully...

I don't guess I would call it a waste. I just took an old Torrey blade, did 20 laps on a Norton white ceramic (about the same as factory fresh Spyderco fine), looked at it at 100x, then followed...