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: $4140

White Flash: $5248

Abazias: $5513

Blue Nile: $5575

Brilliant Earth: $5880

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.