I'm guilty of passing judgement on people that I see w/ huge rocks that I know can't afford that size. I automatically, w/o hesitation, pass their rings as fake, even if it may be real. If you're a bargain hunter/thrifter/don't like wasting money type of gal and you come to me showing your 3ct ring -> i'll immediately think you're full to shit, lol. I'm sure others do it too but won't admit to it. As with all things, if you don't have the means to afford the real thing, then don't pretend as if you can, cuz that just makes you look silly to everyone else. It like seeing someone wearing a fake designer bag...it makes me cringe.