This is a comparison of 1ct premium cut, E color, VS2 clarity Marquise cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $4450

White Flash: $5456

Abazias: $5731

Blue Nile: $6442

Brilliant Earth: $6510

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.