This is a comparison of 2ct ideal cut, H color SI1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $21,760

White Flash: $25,449

Abazias: $24,152

Blue Nile: $23,882

Brilliant Earth: $24,620

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.