Ada Diamonds specializes in large, sensational lab diamonds of the highest quality. Every ring is custom and made to order by award-winning artists in the USA. Here are some gorgeous 4 carat lab created diamond engagement rings we have created for past clients.

4 Carat Round Petite Pavé Engagement Ring

14k yellow gold pavé engagement ring featuring a 4 carat round lab grown diamond center stone. See additional design details!

4 Carat Radiant and Trapezoid Three Stone Engagement Ring

14k yellow gold three stone engagement ring featuring a 4 carat radiant cut lab diamond center stone and brilliant cut trapezoid lab diamond side stones. See additional design details!

4 Carat Oval Solitaire Engagement Ring

Platinum solitaire engagement ring featuring a 4 carat oval lab grown diamond center stone. See additional design details!

4 Carat Emerald Pavé Engagement Ring

14k yellow gold diamond band engagement ring featuring a 4 carat emerald cut lab grown diamond. See additional design details!

4 Carat Asscher Cut Solitaire Engagement Ring

Platinum solitaire engagement ring featuring a 4 carat asscher cut lab grown diamond. See additional design details!

4 Carat Pear Brilliant Halo Engagement Ring

Platinum custom halo three stone engagement ring featuring a 4 carat pear and baguettes.

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You dream it, we’ll bring it to life with lab grown diamonds curated for extraordinary quality.

About Lab Diamonds

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

Shop Fine Jewelry

Our curated fine jewelry collections feature expert-curated lab diamonds.