This is a comparison of 1.7ct ideal cut, D color, VVS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $40,680

White Flash: $42,615

Abazias: $43,573

Blue Nile: $44,555

Brilliant Earth: $48,780

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.