Polly, I have been "in" daylilies for about 25 years, and diamond dusting is one of the things that first caught my eye. I don't think I would say it is common, in that 50% of daylilies have it... Not nearly that many, but it is common enough that when I see it, I don't think "oh, WOW, diamond dusting!" I think it happens more frequently on yellows and polychromes maybe on some lavenders and pale pinks... For some reason I can't think of ever seeing it on a dark, saturated color. On those colors, you can have a high, satin sheen, such as BELA LUGOSI has.
Brother Charles Recamp did early work with polychrome colors and also teeth. Now that I think of it, he was the hybridizer, (I think) of Angel's Smile, which I believe is in the background of Bass Gibson. For a less expensive try at it, maybe look for Techny Peach Lace, Techny Spider .... Recamp or Recamp-Khlem or maybe it is Khlem-Recamp. I think he did most of his work with early tets. I used to grow a small dip of his called LITTLE RAINBOW. I loved that little thing. I should try to find it again. Lovely thick waxy distinctive polychrome.
There is a book called something like Masters of the Victory Garden. Has a great article on Brother Charles in it.