This is a comparison of 1ct ideal cut, D color, VVS2 clarity Round cut diamonds (click the dollar amount to be taken directly to the diamond):

James Allen: $11,460

White Flash: $15,183

Abazias: $13,789

Blue Nile: $12,400

Brilliant Earth: $13,855

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.