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

PCB Piezotronics
development, production, and marketing of piezoelectric quartz, tourmaline, and ceramic sensors for measuring dynamic pressure, force, shock, and vibration. Our sensors are designed for applications ranging from the characterization of underwater blast wave propagation to detecting micro-g vibrations on the solar panels of orbiting satellites.
http://www.pcb.com/

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/

Systron Donner Inertial Division
Systron Donner Inertial - a leading supplier of precision aerospace inertial sensors and systems for more than fifty years. Our innovative angular rate sensor, linear accelerometer, and inertial measurement unit designs are used in a variety of critical military and commercial Guidance, Navigation and Control (GN&C) applications worldwide.
http://www.systron.com

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/