But will the YG on Van Cleef bracelet clash with my white gold love bangle? I think I'd prefer a white gold Van Cleef but in what design?
Yes, the WG with MOP would look perfect!!!
Our lovely tPFer Kim_mac has a sweet AND a 5 motif in yg paired with her yg love bracelet here for reference pics:
http://forum.purseblog.com/the-jewelry-box/vca-van-cleef-and-arpels-addiction-support-group-655055-49.html#post18367173
Here are multiple sweets paired with multiple love bracelets!!!
http://img829.imageshack.us/img829/957/5407863311e9457ab83dz.jpg
I think the sweet bracelet in wg and turquoise butterfly would look great with your wg love bangle.
Personally, I prefer the sweets because they look more delicate and won't compete with the love bracelet. But it's YOUR 20th wedding anniversary and you should get what you want!!