This is a comparison of 1ct ideal cut, G color, VVS1 clarity Cushion cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $5560

White Flash: N/A

Abazias: N/A

Blue Nile: $6489

Brilliant Earth: $8700

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.