This is a comparison of 0.7ct ideal cut, G color, VS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $4090

White Flash: $4119

Abazias: $4733

Blue Nile: $4606

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.