The crystal on my Gruen Veri Thin Precision 380 cracked at some point. And I never had to search for a double dome mineral glass crystal with this high a dome before. And it is a constant radius; it doesn't flatten on top. It is 38.2 mm diameter, is uniformly 1 mm thick throughout, and is 4 mm deep inside. I have found no other high dome crystal like it, in all my searches.
I put a temporary GS XHD crystal on my watch for now, but I would love to find a crystal like what it had. The high-curved dome was part of the look of the watch. Does anyone here know of a source?