Quote Originally Posted by mainaman View Post
From what I hear from people that know stones koma should be pretty hard stone.
Yep, One I have is really hard.

I don't have any explanation to that, but on Iwasaki book, he spell koma as こま (look for #4) but koma nagura with asano stamp written as コマ



that's coming from Eastern Smooth: More than you want to know about Nagura...(LONNNNNG)

Stamp on my koma from Morihei made me think about it. He also spelled koma like こま名倉 and not コマ Any ideas?