This is a comparison of 1.25ct ideal cut, F color, VS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $13,840

White Flash: $14,754

Abazias: $14,833

Blue Nile: $15,141

Brilliant Earth: $18,325

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.