People often wear quartz crystals in the belief that they enhance their heal or spiritual well being. Clear crystal quartz is also used to make radios and computer chips. Some of the best known rock crystal in the world comes from Arkansas. Official Quartz Brazil is a noted producer of amethyst, smoky quartz, rose quartz, rock crystal, and fine agates. All of these have been adopted as symbols by various states in the Unitd States.
Pinkish quartz is called rose quartz.
It ranges from transparent to translucent. Translucent rose quartz is much more common and is used for beads, cabochons, carvings, and architectural purposes. Smoky Quartz is a common mineral also found in many types of rocks, including granite. Sometimes incorrectly called smoky topaz, this brown transparent quartz is sometimes used for unusual faceted cuts. Georgia named quartz its state gem and staurolite its state mineral in 1976.