Quartz is engineered — approximately 90–95% ground natural quartz crystals bound with polymer resins. Non-porous, no sealing required, UV-stable, and consistent in color and pattern. Quartzite is 100% natural metamorphic stone — sandstone transformed by heat and pressure into a hard, dense material with natural veining. Quartzite requires sealing but is harder and more heat-resistant than marble. The names are similar and frequently confused — quartzite has a natural stone depth and variation that engineered quartz cannot fully replicate, while quartz offers consistency and zero-maintenance that natural stone cannot. RainFire Builders can show you actual slab samples of both to compare in person.