This is a comparison of 0.6ct ideal cut, E color, VVS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $3490

White Flash: $3791

Abazias: $3805

Blue Nile: $3660

Brilliant Earth: $3750

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.