First, does this look like travertine to you? I googled on Home Depot to try to compare.

If so, what’s the best way to clean? My go to for most things is hot water, bleach, and tide. Will that destroy this? Google says travertine is porous and would need a stone cleaner but I don’t see how you could really clean a shower that way. Also, the trim is a very textured stone and almost seems like it would be crumbly … also travertine?

Lastly I read about sealing. How do you do that?

Any tips on maintaining this is appreciated. Thanks!