This is a comparison of 1.3ct ideal cut, E color, VVS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $20,740

White Flash: $21,972

Abazias: $23,331

Blue Nile: $22,283

Brilliant Earth: $24,200

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.