Hardness Grit/Finess Speed/Strength Price in U.S.
9 9++ 9+ SOLD
When used with a paste created by a diamond plate
9 9++ 10+
*In usage when you encircle a kanji word as in this
it becomes MARU (circle) KA or MARUKA.
These salmon color stones are a bit softer then the kiita or asagi but the are still very fine
in grit structure and easier to use especially on hard steels and super blue steels.
Reads on the stone top from the upper right down, JUN SHOSHIN HONYAMA (pure
specially chosen original mountain) which is a registered trade name,
And 27 (an inventory or grading number)
And at the middle SAIKOKYUHIN (very best quality)
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 photos.
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
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 good sharpening skills to use but it is not
as hard as some of the other Nakayama stone like the asagi. These stones are more
easily used if a diamond nagura (DN) plate is used before hand to build up a slurry but
this stone can be used without DN as it will build its own paste.