This is a comparison of 0.60ct ideal cut, H color, VVS2 clarity Princess cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $1530

Blue Nile: $1533

White Flash: $1615

Abazias: $1653

Brilliant Earth: $2150

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.