Two reasons for my bad review:
1) the individual tiles on the mosaic base are spaced unevenly on almost every tile I received. 
2) Wayfair didn't ship the majority of the order but created fraudulent shipping documentation to say they did. It took hours spent calling and emailing and 5 weeks to eventually get my full order. 
Instead of accepting responsibly for their mistakes Wayfair customer service resorted to lying, blaming others, and making excuses for why they could not provide any support on my order. Overall it was a nightmare experience and I would not recommend buying these misshapen tiles or anything else from this site.