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/

Absolute Quartz Crystals
Highest quality rare quartz crystals for the discerning collector and metaphysical user.
http://www.absolutequartzcrystals.com

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

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/

HCJ Quartz Pte Ltd
Manufacturer of quartz crystals.
http://www.hcjquartz.com

ValpeyFisher
Crystals, clocks, oscillators, electronic quartz crystals, oscillators and filters, crystal-based timing devices, Matec, electronics, semiconductors.
http://www.valpeyfisher.com/

International Crystal Manufacturing
International Crystal Manufacturing provides quartz crystals, oscillators, precision crystals, filters, TCXOs / VCTCXOs, QCM crystals, and other frequency control products. Read details about our crystals and frequency control products and services.
http://www.icmfg.com/

Macrobizes Co., Ltd.
Macrobizes is positioned to be the leading manufacturer and provider of Quartz Crystals,Oscillators, quartz tube and also acting as a sourcing agent for importers
http://www.macrobizes.com/

Horizon Electronics Enterprises
Manufacture of quartz crystals.
http://www.horizonxtal.com/