This is a comparison of 1.5ct ideal cut, F color, VS2 clarity Princess cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $9740

White Flash: $10,542

Abazias: $11,349

Blue Nile: $13,667

Brilliant Earth: $14,870

These diamonds are independently inspected and graded by GIA/AGS, which means you can trust their quality. The quality of these diamonds is identical--the only thing that is different is the price. For everything you need to know about buying engagement rings online, please visit http://howiboughtthering.com.