Kumkang Quartz Co., Ltd
Manufacturer of quartz ware - tubes, boats and other quartz wares for semiconductor processing.
http://www.kkquartz.co.kr/

How Crystal Watch Works
Quartz watches actually use quartz crystals to keep time. How can they be so accurate? Find out why quartz makes such a great time keeper.
http://www.howstuffworks.com/quartz-watch.htm

GianTek Quartz Material (Shanghai) Co.
Chinese manufacturer of quartz tube, rod, plates/discs and other custom fused quartz products for a wide range of industrial and laboratory applications.
http://www.gian-tek.com/

Chintele Quartz Technology Co Ltd
A Chinese manufacturer of piezoelectric quartz, quartz products and single crystal optical products for use in the telecommunications and general time and frequency industries.
http://www.chintele.com

OMIG S.A.
Manufacturer of quartz filters and quartz crystals for TCXOs, VCXOs, and OCXOs, and vacuum depositing process control quartz crystals. Site in English and Polish, and include product specification ranges and PDF part catalogs.
http://www.omig.com.pl/

Young Shin Quartz
Quartz glass for semiconductor and optical fiber business.
http://www.ysq.co.kr/

SHENZHEN STAR CRYSTAL CO LTD
Manufacturer of quartz crystals, resonator, SMD and quartz chips
http://www.xghcrystal.com

Wegner Quartz Crystal Mines
Wegner Crystal Mines in Mt, Ida, AR: product and contact information.
http://www.wegnercrystalmines.com/

Quartz Tubing Inc.
Quartz Tubing Inc. manufactures quartz heating elements for any application. Don't compromise -- call The Quartz Source
http://www.quartztubing.com

Doodle's Fine Quartz and Minerals
Arkansas Quartz and Wavellite as well as a large variety of mineral specimens from around the world.
http://www.finequartz.com/