Hello again all.I have decided that I am going to buy my diamond online at blue nile.I have been looking at other websites like whiteflash,james allen and good old gold and I feel that blue nile is the best choice but i guesse that is just a matter of opinion unless someone has a really good reason I should not buy from there.Anyway I have narrowed it down to some signiture ideals and some ideals and the specks between them (I dont have examples just generally speaking) seem very very small,so I was wondering how much of a differance it would make to me or my girlfriend keep in mind cut is very important to me but I can go a little higher in carrat if I go ideal instead of signature ideal.Also what is an exceptable girdle that aspect is a little confusing.Thanks to all!!!