This is a comparison of 1ct ideal cut, F color, VVS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $8760

White Flash: $11,209

Abazias: $12,176

Blue Nile: $12,462

Brilliant Earth: $14,350

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.