This is a comparison of 0.75ct ideal cut, F color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $4150

White Flash: $4650

Abazias: $4949

Blue Nile: $5876

Brilliant Earth: $5320

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.