Wow, that was one of the hallowed $100 DSN crystals too. Supposed to be sapphire, but fails the water droplet test.
I'm not going to drop another c-note with anyone for another new crystal having just bought this one. I guess I'll remove the faulty AR and use it without the "coating".
And I thought I was being prudent asking how to clean it, since I had never done it before.
But as you said, it shouldn't have happened anyway.
What a bunch of crap. This makes me angry. Sorry for the rant, I'm just pissed off about this whole deal.
Thanks for your insight, fm.