This is a comparison of 1ct ideal cut, F color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $9960

White Flash: $10,227

Abazias: $12,372

Blue Nile: $12,168

Brilliant Earth: $12,250

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.