I think that David Yurman is classic and never really goes out of style. I have about 12 pieces - bracelets, necklaces, earrings and rings. I haven't bought any for a while because I'm so happy with what I have now. I find that I don't wear the earrings much, but my necklaces and 4 cable bracelets are my go-to pieces. I wear them in different pairings almost every day.
To me, whether it's silver or not doesn't factor into why I find it so attractive.
Maybe Yurman is like a lot of collection designers: it's an acquired taste and the more that you see it the more that you love it!