STAIN RESISTANT
Quartz is stain resistant, but not stain proof. Anything that might cause staining like red wine, spaghetti sauce or juice should be wiped off. If it is left on the counter top for a long period of time, there is chance that staining might occur.
MAN-MADE ENGINEERED STONE
Quartz countertops are hard to distinguish from the real thing unless you look closely. They lack the natural variation found in many stones, but the benefit is that they are consistent.