This is a comparison of 0.5ct ideal cut, G color, VVS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $2210

White Flash: $2342

Abazias: $2455

Blue Nile: $2335

Brilliant Earth: $2675

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.