I have several buddies who have went the online route to secure their engagement rings. All of whom swear they were able to save significant coin. Would you recommend an online dealer and if so, do you have a top three?
Buying online could be cheaper than retailers. However, if not well-informed, you could have a much larger risks. This link explains the pros and cons of buying online: http://diamondcuttersintl.com/buying-diamonds-on-the-internet/.