Well..me? I like anything that sparkles.
I really don't have any money right now, but I'd like a pair of diamond earrings at some point. I have a few diamond things. But i need earrings. I DEFINETLY think that things can be too big. But it really depends on the size of your finger/ear/whatever. I mean, if I see someone with little teeny fingers wearing some big rock, then it looks kinda awkward. But if someone with bigger fingers is wearing the same sized rock, then it balances out more, ya know? It needs to be decided on an individual basis.