I ordered 90 cases of Continental Slate Persian gold tile 18X18. The tiles are terrible quality. I am a paraplegic and postponed surgery to get the tile from a single run. While we were installing there were glue spots from where the cases were glued together. There were other spots which looked similar. When we started to clean tile after installation the majority of the spots would not come off. They are actually drips from glazing sprayers. These sprayers were clogged causing a very uneven application of glaze. Some tile seen to have none... read full review »