This is a comparison of 1.8ct ideal cut, H color, VS1 clarity Princess cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $11,050

White Flash: $12,086

Abazias: $18,078

Blue Nile: $14,246

Brilliant Earth: $12,450

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.