Two and a Half Carat Round Lab Grown Diamond Engagement Rings

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!


Shop Engagement Rings

You dream it, we bring it to life with lab diamonds curated by experts.

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.