This is a comparison of 0.9ct ideal cut, H color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $5260

White Flash: $6085

Abazias: $5713

Blue Nile: $5561

Brilliant Earth: $6260

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.