I'd say its a marble tile of some sort with what looks like a honed (not polished) finish.

It is laid in a herringbone pattern which I really like. However, I find longer tiles make a nicer herringbone. (2 X 8 is nice) Go visit a reputable tile store (not a big box store) to find what you are looking for and discuss your wants/needs carefully with your installer prior to purchasing. It is a labour intensive installation and not for an average handyman in most cases. I wouldn't let any of that put me off, I'm just trying to give you a heads up for what is ahead. It looks lovely, if you like it, go for it.

And if you work with HD, you will need to order 10-15% waste because of the quality (is not there). And then you will need to know HOW to seal marble tiles (can be as many as 3-4 times...which you have to learn BEFORE you install). Here's a hint. You seal the tiles ONCE before you install. And then multiple times afterwards.

Then there is the right colour thinset/mortar...grout product, etc. Learning to lay stone is exciting....by your screen name I'm going to guess you will be attempting this yourself?

Looks like a marble material, in the herringbone pattern.

Thanks all. I’m thinking to going with this tile below:

https://www.flooranddecor.com/marble-stone/carrara-milano-honed-marble-tile-100402569.html

How do you seal it? And what grout color do you recommend?

Read the instructions on the box of tiles.

Also, what color grout would you say the picture above is using?

A well established tile setter can arrange all of the requirements for a marble tile install. It just needs to be added to the contract and paid for. Just make sure your contract specifies "installed to NTCA and manufacturer's Requirements". You'll be fine.

If you instead select the simulated porcelain marble from Floor & Decor you won't have to

• seal the marble
• worry about etching
• pay the additional cost to have marble tile instead of porcelain tile installed
• purchase 20% overage so your tile setter can throw out all the tiles that are completely off color and will run the job.

You can have this tile set with a 1/16" joint and no one but you will know that it's not the real thing.

Do a search in the box at the top of this forum for "marble tile etching" and read about what can happen to marble before you decide on it. If you have anyone who might now or later have trouble getting urine completely in the toilet, or if you have pets that might pee in the bathroom, you need to know what can happen to marble. Anything that you use that could spill also has to be considered.

Thanks for letting me know. I have started to look at the porcelain simulated look. Thanks again everyone.

Also, is 1/16 or 2/16 spacing recommended?

The smaller grout line simulates a marble installation however, some tiles are not manufactured in a precise enough fashion to allow for 1/16, ........so it depends.

The grout line depends on the tile. Again...read the instructions on the box. And do exactly what it says.