calmloki
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
They may or may not be cracks at all. We just purchased the identical tile a couple weeks ago as I am doing our bathroom shower floor as well and decided on this tile after lots and lots of researching for one that would work well.
The tiles come like this. Check the picture on Lowes website. If you run your fingers/nails over those tiles which appear cracked, especially the one which appears to be a bigger one, are they, or are they smooth just appearing to have hairline fractures like in the pictures for the tile at Lowes?
https://www.lowes.com/pd/Anatolia-T...-Polished-Hexagon-Mosaic-Wall-Tile/1001042638
I've also attached a couple pictures of ours, still in the wrapper and you can see similar.
No harm in asking tiler to replace those individual hexagons that appear cracked, but it's likely not a result of something he did incorrectly.
Credit to njhowie, who gets right past underlayment questions.
I haven't seen the Lowes tiles, so can't speak to whether those are real cracks or fake; real stone or bogus, but can say that it is common to show "distressed finish" or "natural flaws" when trying to imitate a real product. Examples: pressed masonite panel doors with ugly graining no carpenter would pass on to a painter or faux knots in fake wood flooring where clear vertical grain would be the desired natural product.