Unknown Mine Awasedo Fine Grit Japanese Natural Sharpening Stone 971g (2lb.2.3oz.)
It looks Suita which has layers on the side of the faces, and it has also Renge dots on the sharpening surface on the top and bottom.
Size of the whetstone:
168mm x 75mm x 30mm
It is a medium hard heavy and condensed stone.
It raises very good amount of black slurry quickly.
Hardness-------------8.6
It looks it does not need tomo nagura or the device to produce the slurry (worn Diamond lapping stone). because it raises good enough amount of the slurry quickly and smooth sharpening surface.
(Scale; 1 to 10, 1-3 is 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
It makes my Swedish carbon steel Kasumi blade knife Hagane became grayish frosted silver color, and Hagane became mirror finish.
(Scale; 1 to 10, 1-3 give deep scratch marks to the steel, 3-5 is delete the 1-3 scratches, 5-8 makes 3the steel cloudy, 8-10 makes the steel semi-mirror finish or 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.