This is a comparison of 1.7ct ideal cut, H color, VS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $18,180

White Flash: $20,003

Abazias: $19,960

Blue Nile: $19,561

Brilliant Earth: $23,735

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.