This is a comparison of 1.6ct ideal cut, E color, VS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $23,050

White Flash: $26,669

Abazias: $25,558

Blue Nile: $25,731

Brilliant Earth: $28,350

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.