Difference between Crystal and Quartz

What is the difference between Crystal and Quartz?

Crystal as a noun is a solid (mineral quartz or otherwise) composed of an array of atoms possessing long-range order and arranged in a pattern which is periodic in three dimensions. while Quartz as a noun is the most abundant mineral on the earth's surface, of chemical composition silicon dioxide, sio2. it occurs in a variety of forms, both crystalline and amorphous. found in every environment.

We hope you now know whether to use Crystal or Quartz in your sentence.