ᐅ Searching for Natural Stone Based on Pictures

Hi everyone,
could you maybe help me with your geological expertise? I’m specifically looking for natural stone tiles like these:
Is this limestone or marble? I’ve already contacted the architects of the houses – hopefully, I’ll get a reply.

We are currently planning a combination of hardwood flooring and natural stone 🙂

This is "natural stone look" – these are just regular tiles...

If it is natural stone, I would guess travertine.

I would also guess travertine or alternatively FSZ. Possibly even marble – but that is usually polished.

Just google Atlas Concorde, natural stone look.
I also think that they are "just" tiles. To look good and natural, it doesn’t have to be real stone.

The slightly gray material could also be Muschelkalk limestone. Kirchheimer Muschelkalk is very attractive.