A super fine Ozaki tomae gosua kamisori toishi. This is a very pure stone from front to back, side to side with no
inclusions whatsoever. Very dark with hints of blue with saturated gray it is a medium hard stones and easy to use.
I have shaved off this stone and achieved a very fine shaveable edge after just a few minutes using
TheAxMethod.  
or it could be used with Mikawa nagura or tomonagura.

All of my stones come fully lapped with beveled edges unless otherwise noted.

This stone and the other kamisori toishi on my site are from a world class private collection of over 400 pieces
assembled in Japan over the past years in the area around Toyama by a collector of shaving implements. I was
lucky enough to purchase total collection over the last 2 years. Many of the hones were actually used by barbers,
some dating to the 1920s or earlier, while others were simply prepared by the miners as razor hones as evidenced
by the size and fine quality of the stones grit composition.
OZAKI GOUSA  KAMISORI TOISHI #442
TheJapanBlade
H
G
A
L
Hardness      
Scale
1 to 5+
Grit-Grain
Scale
1 to 5+
Abrasive
Speed
1 to 5+
Speed w/
slurry
5
5+
5+
5+
FinalFinish or Polishing
Stone
HHT3-4
182x64x
18mm
$225