This is a comparison of 1.5ct ideal cut, G color, VVS1 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $21,550

White Flash: $22,959

Abazias: $24,094

Blue Nile: $21,978

Brilliant Earth: $24,620

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.