Quartzite Gemstone

Quartzite is a rock almost entirely composed of quartz that comes in many colors. Midnight Quartzite is gray quartzite with dark smoky spots and streaks across the surface of the stone.

What is the difference between quartz and quartzite? Quartzite contains quartz, but the primary difference between quartz vs quartzite is that quartz is a mineral and quartzite is a rock.