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

James Allen: $4170

White Flash: $4849

Abazias: $4940

Blue Nile: $5018

Brilliant Earth: $6870

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.