Thanks again Polymerous! Great ideas. I better get busy!
Amber, I have never paid any attention to the weather when I notice the diamond dusting. Well, not if it is better depending on the weather. If it wasn't almost dark here, I'd go out and have a look. Seems like the sun really makes them shine, but I know I've seen it easily on cloudy days too. I'm just not sure about each daylily, and if it makes a difference.
I was able to find over 1,400 daylilies in the database here that mention diamond dusting, by putting that into the bloom characteristics box. I didn't check any of the other boxes. I'm sure that there are way more than just the 1,400 or so, but it's a start!
EDITED to say that I sure got that wrong about the search! I clicked on the box for Diamond Dusted, under Bloom Traits. And, there are 1246 daylilies that matched, not over 1400. My brain is fried!