I've looked at marbles under real optical microscopes before too and it really can be a little scary. Basically, I decided I didn't care for it . . . too depressing. But it's an old-time marble collector who told me, for collecting purposes, "if you can't see it with your own vision, it may as well not be there", and I agree.
Psssstt . . . Hey, check out this marble . . . it's awesome . . . just let me get the AFM tuned in. lol