I purchased 2 boxes of these tiles to put in my bathroom. Of both boxes, maybe 1/3 of the tiles were not damaged. In one box I think almost every tile had damage to one of the corners (so they weren't perfectly square and it was obvious). On 2 of the tiles there was also a black mark that went across the white part like a stained line. I made it all work, and luckily I was able to cut off the side with the damaged corner when measuring and fitting the tiles in. Only maybe 5 tiles were not damaged or stained.