This is a comparison of (click the dollar amount to be taken directly to the diamond):

James Allen: $18,610

Abazias: $25,909

Blue Nile: $19,926

Brilliant Earth: $21,090

White Flash: $19,347

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.