This is a comparison of 1.35ct ideal cut, E color, VVS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $22,650

White Flash: $25,199

Abazias: $22,903

Blue Nile: $25,501

Brilliant Earth: $29,430

These diamonds are independently inspected and graded by GIA/AGS, which means you can trust their quality. For everything you need to know about buying engagement rings online, please visit http://howiboughtthering.com.