Quote Originally Posted by SharpMan View Post
I can't be certain of course, but I have seen so many(thousands) natural stones
and I always pay attention to their looks and what mine and strata they are from.

OP says the stone is very hard, so very likely from a deep strata. It does not
look like suita at all, so probably tomae, namito or aisa strata. Looking at the
colour of the stone I see this greenish colour, and tiny hints of karasu
which makes me think namito the most and maybe aisa. And I get a ''namito
feeling'' looking at the stone. Might be aisa or between both.

Sharpman
You have personally hadled thousands of Jnats or just seen pictures of that many?
I am not sure one can tell what a stone is just by looking at pics, especially if we do not know the pic shows the real color of the stone.
Karasu can be fond in layers other than Aisa and Namito.