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NAKAYAMA #25 MARUKA  ASAGI AWASADO 

206mm x 73mm x 33mm

Reads on the stone top from the upper right down, SHIN HON YAMA AWASE TOISHI (pure original mountain finishing stone) which is a registered trade name,

And at the middle SAIKOKYUHIN (very best quality)

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 before WW2. 

This is an actual Maruka Nakayama awasedo, it is not a fake. Stones of this color and varity have not been mined from Nakayama for well over half 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 very hard stone and it requires advanced sharpening skills to use. The change in color indicates it is from the edge of the strata. These very hard stones are more easily used if a diamond nagura (DN) plate is used before hand to build up a slurry.

*In usage when you encircle a kanji word as in this case KA, it becomes  MARU (circle) KA or MARUKA.

**DN-Diamond Nagura