This is a comparison of 1ct ideal cut, F color, SI1 clarity Princess cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $4890

White Flash: $5407

Abazias: $5250

Blue Nile: $5505

Brilliant Earth: $5105

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.