This is a comparison of 1.6ct ideal cut, E color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $22,610

White Flash: $23,395

Abazias: $26,056

Blue Nile: $23,707

Brilliant Earth: $29,860

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.