This is a comparison of 1.5ct ideal cut, G color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $16,290

White Flash: $19,163

Abazias: $18,290

Blue Nile: $17,946

Brilliant Earth: $17,160

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.