Ooooooh, diamonds are one thing that I know a whole lot about
Blue Nile is not the best....not by a long shot. eBay isn't the best either, although deals CAN be found. I recommend
www.whiteflash.com (get A Cut Above) and
www.exceldiamonds.com (get the Superb Certs). At those 2 sites, you will find extremely high quality diamonds at extremely competitive prices. White Flash is VERY good at custom making settings as well.