I suggest you guys not to buy their quartz. They are not as advertised as far as their Certifications. They advertise their products as "NSF Certified" which they are but they are only listed as "Splash Zone" which is not safe for food.

Also they list their selves as "Green Guard" certified. Which can not be found anywhere on the Green Guard Website.

A user from another discussion tried to call QuartzMasters, and was not able to be given a direct answer their sales rep. They were instead told from QuartzMasters to reach out to Thomas, who may or may not be their company owner.
Careful trying to buy from them.

They should be advertising all these certifications on their website.. like SileStone, Caesarstone, HanStone, QfromMSI, and various other Quartz Company who are reputable.

I am not trying to deter anyone from buying from QuartzMaster.
I am simply trying to inform everyone of this concern I had myself, since I was in the market of attempting to purchase Quartz myself. I ended up going with QfromMSI.