Im a granite fabricator so I use these type of blades daily. This blade made it only through 3 jobs. 2 were quartz , which it had no problems cutting. The 3rd was a prefab granite job at a doctors office. Material was giallo ornamental (not the hardest granite) after cutting 4 sinks it developed a burn mark and stopped cutting. The blade had about ¾ of the diamond rim left still. I won't be buying it again. Which is sad. I really like the 7" version for my skill saw.Its better than the $15 blades at home depot but not by much.