Hello Reza,

Here are a few companies you can call for the quartz wafers. Good Luck!!

Cal-Glass for Research
Cost Mesa, CA   714-546-7250

GE Quartz Inc.
Willoughby, OH  800-327-3481

Quartz Scientific
Fairport Harbor, OH     440-354-2186

United Silica Products, Inc.
Franklin, NJ    973-209-8854

If you happen to need a dicing blade to cut or groove the quartz let me
know. We represent Asahi Diamond which manufacture diamond dicing blades
that are used to cut silicon, glass, GaAs and of course quartz.
Also we give Universities a 10% discount on any of our blades. If you
would like I can send you some information on our various blades.