This is a comparison of 1.7ct ideal cut, F color, VS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $20,840

White Flash: $23,587

Abazias: $24,479

Blue Nile: $27,041

Brilliant Earth: $29,750

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.