This is a comparison of 1ct ideal cut, E color, VS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $12,030

White Flash: $14,109

Abazias: $14,310

Blue Nile: $14,836

Brilliant Earth: $14,150

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.