OK, so I have pretty much settled on a .65-.70 carat diamond with an F or G color, and an SI1 or SI2 clarity. However, I don''t know much about depth and table and anything else that might go into making the cut ideal. What is a good range of numbers for depth and table? I want an Ideal cut diamond as pretty much everyone I have talked to and everything that I have read says that cut is the most important of the C''s. Thanks for any information that you can help me out with as I am a college kid who is trying to figure this out fairly quick so that I can propose! Also, any input as to where I should buy (I am currently looking at Blue Nile and Union for the diamond and then having it set somewhere else) would be greatly appreciated. From everything I have read the most complaints about online purchases seem to come from the settings so I figured it would be best to have it set at a brick and mortar store so that I can check it out myself more easily. OK, thanks for all your help and take care!