Dreaming of a 2.5ct round lab created diamond? Here are 3 different styles to set a 2.5ct round brilliant lab diamond in a one-of-a-kind custom engagement ring from Ada Diamonds.

2.5 Carat Round Solitaire Engagement Ring

14k yellow gold solitaire engagement ring featuring a 2.5 carat round lab grown diamond. See additional design details!

2.5 Carat Round Diamond Band Engagement Ring

Platinum diamond band engagement ring featuring a 2.5 carat round lab diamond center stone. See additional design details!

2.5 Carat Round Halo Engagement Ring

14k rose gold halo engagement ring featuring a 2.5 carat round lab diamond center stone. See additional design details!

2.5 Carat Round Three Stone Engagement Ring

Platinum three stone engagement ring featuring a 2.5 carat round lab diamond center stone. See additional design details!

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About Lab Diamonds

Learn how lab diamonds are grown, how they’re priced relative to mined diamonds, and more.

Concierge Experience

Work one-on-one with a lab diamond expert to bring your custom ring to life.