I have recently entered the market for a diamond ring and am not sure what to look for. I have decided on a princess cut diamond. From what I have read it seems safe to go with a G/H and SI1 with the largest stone affordable. I know that cut is the most important factor but am not sure what to look for in a cut. Blue Nile lists "Ideal" but depth, girdle, table, etc. are always different. Is there a range that you would want a princess cut to fall in for an acceptable cut? Also, how does Blue Nile compare to other diamond retailers as far as pricing? Thanks for the help.