Quartz are a man made designed stone. The greater part of the countertops (90%) are made of little bits of quartz. The rest holds the quartz bits of quartz together-pitches, polymers, and shades. Once joined, they make a lovely ledge that is hard similar to rock. For More Details : https://primussurfaces.com/quartz-countertops/ https://alexluois123.livejournal.com/2105.html