I can't seem to find it anywhere (not sure I am using the right search terms). Thanks so much for any help you can provide.

That has the look of marble (very hard to tell, but the gray/white has unique colouring for each piece...which normally points to natural materials). A similar look would come from encaustic tiles. They are known to do geometric patterns in gray/white in this theme.

Yes, I'm pretty sure it is marble. Any idea who manufactures something like this? Thanks so much for your input!

I think tilebar sells it. Thanks again.

Check Ann Sacks. Use the search term water jet tile