As the title states, my contract installed several cracked marble mosaic tiles on my bathroom floor. I had advised him that I noticed cracks and chips in some of the tiles while just quickly looking through them and to please make sure he checked each tile before laying it and I would be happy the exchange the damaged tiles for new undamaged ones. After they had already layed them down I noticed 10+ tiles were cracked or damaged and 5+ have severe lippage. Is it normal for contractors to lay damaged marble? I have included photos of the problem areas. Is there anything that can be done to fix this?