Ladies, if you dislike your ring, please just keep it to yourself and hope that maybe one day you can upgrade it and get a new one. I just made this horrible mistake about 2 days ago. My fiancee is overseas in Afghanistan and i emailed him and told him in the nicest way possible that it was not the shape i had wanted and sent him a few that i liked better. He proposed in May before he left. He is devastated and VERY hurt and will not talk to me because he does not know what to say. in his words, he chose it from his heart and it represents our relationship. I have learned a huge lesson, that it's not the ring that matters, it's what it represents and me mentioning something has made me appear ungrateful and materialisitc. He even went so far to tell me to cancel the photography appointment on Thursday. I'm not sure we are even getting married anymore. PLease don't do it, it's not worth losing the best thing that's ever happened to you. I need prayers ladies, i messed up real bad :-/ No matter how nice you say it, the meaning of the ring is basically thrown out the window which has made him feel that i care more about the ring than being with him. Horrible situation, i'm so upset. And this is coming from the guy who i have always been able to honest with, never gets upset over anything...... trust me, don't do it. And this was only telling him I wanted a different shape, not a bigger ring, not a bigger carat, none of that. It wasn't a princess cut, it was a radiant cut which is more of a rectangle versus square. Just be appreciative ladies, my advice. 
Who knows if we will get married still. Peopel are starving all over the world and im worried about the shape of my ring. I'm ashamed honestly.
I'm feeling pretty blessed
