This is a comparison of 1.5ct ideal cut, D color, SI1 clarity Princess cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $9730

White Flash: $10,703

Abazias: $10,865

Blue Nile: $11,879

Brilliant Earth: N/A

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.