The only natural finishing stones commonly discussed are the japanese, chinese, british, german, belgian and so on.

But is there suitable rocks to mine from all over the world (for finishers) or are there only a few select locations that has the right type of rock/mountains?

Or can you find suitable rock all over the planet but no one has mined/discovered it yet?

I recently found out about a finnish stone called vaastilaa or similar, but it was a slow grinding type and only about 3-4k or so iirc.

Scandianvia is quite rocky and I wonder if there is anything with potential from there.
Also southern europeans except belgians and germans (ok not really that south but still)?

What about african or australian stones? Or south american?