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

James Allen: $4210

White Flash: $5434

Abazias: $4813

Blue Nile: $5754

Brilliant Earth: $7950

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.