Vintage Iromono Murui Shohonyama Awasedo 30kiri size 3lb. 15.6oz. (1804g) Natural Sharpening Stone
205mmX78mmX43-45
#6000 to #10000 Grit For final sharpening High-grade Carbon steel blade Cutlery
The stone has purple color portion and greenish color portion, and lots of Nashiji dots on the sharpening surface.
The original box is still very nice shape.
Hardness--------8.2
It raises very good amount of black slurry quickly.
It is soft side of the fine grit stone, so it does not need Tomo Nagura or a devise that generates slurry.
If you prefer to use soft stone or the work does not want scratches on the Jigane, it might be great finishing stone.
(Scale; 1 to 10, 1-3 is very soft muddy rough grit whetstone 3-6 is soft medium grit whetstone, 6-8 is hard medium grit whetstone; 8-10 is fine grit whetstone)
Particle Size------- 8.9
(Scale; 1 to 10, 1-3 give deep scratch marks to the steel, 3-5 is delete the 1-3 scratches, 5-8 makes the steel cloudy, 8-10 makes the steel semi-mirror finish or mirror finish)
It makes my blue II steel blade knife Jigane became bright silver frosted color finish, and Hagane became mirror finish.
Natural whetstone has wider capacity than artificial whetstone, and actually, we do not know until sharpen blade on the hone for a while. Because artificial whetstone molecules do not break down to smaller sizes, but Natural whetstone molecules are possible to break down to smaller sizes, and those molecules are mixed with sharpened steel molecules, and make Jigane as suitable Jigane color, and Hagane as suitable Hagane color. It is natural mystics.