This is a comparison of 1.35ct ideal cut, H color, SI2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $8270

White Flash: $9846

Abazias: $9500

Blue Nile: $8520

Brilliant Earth: $9300

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.