I am currently looking for a round, certified (I''ve been using GIA, but I guess I''m open to any reliable certification) diamond for an engagement ring in the 1.70-2.00ct range. After visiting A LOT of different brick and mortar as well as online stores, the best combination of selection and value I''ve come across is Bluenile.com. Can anyone please suggest alternative options (brick and mortar stores, pawn shops, chain stores, online companies) that offer better value? Place where I can get the most bang for my dollar holding all traits of a diamond constant.