This is a comparison of 2ct ideal cut, G color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $23,520

Brilliant Earth: $25,470

Blue Nile: $26,017

White Flash: $26,985

Abazias: $27,355

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.