This is a comparison of 0.6ct ideal cut, E color, SI1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $2110

White Flash: $2433

Abazias: $2336

Blue Nile: $2201

Brilliant Earth: $2445

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.