Hardness   Grit/Finess   Speed/Strength   Price in U.S.
10               9++                9+                        $1200   
When used with a paste created by a diamond plate  
10               9++              10-

Kiita stones known as yellow board, are very fine grit and are at the top of the class of Japanese
Reads faintly on the stone top from the upper left down, SHIN HON YAMA (pure original
mountain) which is a registered trade name,

Marked faintly on the end of the stone in a rectangle KA SHO HON YAMA * (Maruka correct true
original mountain).

This Nakayama Maruka awasedo toishi stone is NEW/OLD stock from a closed store in Japan.
It has not been used other than to test the quality at one edge of the stone as you can see in the

You may find other references to the Maruka Nakayama mines on the internet. This mine was
known throughout its history to produce the finest awasedo finishing stones in Japan and
probably in the world. The Maruka stamp on the end, the registered stamp on the top of this
stone and the single toothed fine saw marks help to date the stone to before WW2.

This is an actual Maruka Nakayama awasedo, it is not a fake. Stones of this color and variety
have not been mined from Nakayama for well over three quarters of a century and they never will
be mined again as these rare deposits are depleted. The mine was closed in the 1960s and I
will not be able to replace or offer these stones again.

This is a medium hard stone and it requires advanced sharpening skills to use and these very
hard stones are more easily used if a diamond nagura (DN) plate is used before hand to build
up a slurry.
nakayama26.jpg (310256 bytes)