This is a comparison of 0.85ct ideal cut, E color, VS2 clarity Princess cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $2900

White Flash: $3302

Brilliant Earth: $3900

Abazias: $4069

Blue Nile: $4494

These diamonds are independently inspected and graded by GIA/AGS, which means you can trust their quality. The quality of these diamonds is identical--the only thing that is different is the price. For everything you need to know about buying engagement rings online, please visit http://howiboughtthering.com.