What’s the Difference Between Quartzite and Quartz?

Weigh the pros and cons of these popular countertop materials.
Quartzite is a natural stone that is extracted from the earth, just as marble, limestone or soapstone are quarried.
Quartz, or engineered quartz, is manmade. It’s composed of roughly 90 percent ground quartz (the actual mineral), with the remaining 10 percent being a mixed cocktail of resins, polymers and pigments that varies by manufacturer.