This is a comparison of 1.25ct ideal cut, I color, VS2 clarity round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $6270

White Flash: $7263

Blue Nile: $7301

Abazias: $7837

Brilliant Earth: $7850

These diamonds are independently inspected and graded by GIA/AGS, which means you can trust their quality. The quality of these diamonds is identical--the only thing that is different is the price.