This is a comparison of 0.9ct ideal cut, F color, VS1 clarity Princess cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $4080

White Flash: $4239

Abazias: $4601

Blue Nile: $5371

Brilliant Earth: $6240

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.