This is a comparison of 0.8ct ideal cut, F color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $4270

White Flash: $4850

Abazias: $4851

Blue Nile: $4605

Brilliant Earth: $4755

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.