Visit
www.sternkreuz.de
Find somebody who speaks German as this site is in German.
Send request if they can supply or cut the glass for your watch.
BE WARNED: it can be very costly and you may need to send your watch to them for a proper measurments.
Then there is a mineral glass cutting service in Australia:
www.startlocal.com.au/wholesale/
watchmakersequi/sa_adelaide/Steve_Martin_Mineral_
Watch_
Glass_
Cutting_1847755.html - 12k -
Cached - Similar pages
I don't know if there is a such a service in USA.
Good Luck