Engagement Rings

Lab Diamonds set in White Gold Round Three Stone Diamond Engagement Ring (Main View)

Shown with 2ct in 18k White Gold

Lab Diamonds Round Three Stone Diamond Engagement Ring in White Gold (Side View)

Shown with 2ct in 18k White Gold

platinum 3.5 ct round lab diamond three stone ring ada diamonds design ad 070

Shown with 2.5ct in Platinum

platinum 3.5 carat round lab created diamond three stone engagement ring ada diamonds design ad 070

Shown with 2.5ct in Platinum

3.0 ctw Diamonds set in White Gold Round Three Stone Diamond Engagement Ring (Main View)

Shown with 3ct in 18k White Gold

2.0 ct Diamonds set in Platinum Round Three Stone Diamond Engagement Ring (Main View)

Shown with 2ct in Platinum

platinum four carat round three stone lab diamond engagement ring ada diamonds design ad 070

Shown with 2.5ct in Platinum

platinum round 2.5ct lab diamond engagement ring with round side stones ada diamonds design ad 070

Shown with 2.5ct in Platinum

Platinum 2.25 Carat Three Stone Engagement Ring with Round Brilliant Lab Created Diamonds Ada Diamonds Design AD-070

Shown with 1.75ct in Platinum

White Gold Round Three Stone Diamond Engagement Ring featuring High Quality 1.0 ct Lab Diamonds (Main View)

Shown with 1ct in 18k White Gold

Shown with 2.25ct in Platinum

Platinum Round Three Stone Diamond Engagement Ring featuring 1.75 Carat Lab Diamonds (Main View)

Shown with 1.75ct in Platinum

Trellis Platinum Round Three Stone Lab Diamond Engagement Ring Ada Diamonds Design AD-070

Shown with 1.75ct in Platinum

Platinum Round Three Stone Diamond Engagement Ring featuring 1.25 ct Diamonds (Main View)

Shown with 1.25ct in Platinum

Shown with 2ct in Platinum

Hand Selected 2.5 Carat Diamonds Round Three Stone Setting in Platinum (Main View)

Shown with 2.5ct in Platinum

Exceptional Quality 1.5 Carat Synthetic Diamonds set in Platinum Round Three Stone Setting (Main View)

Shown with 1.5ct in Platinum

platinum 1 ct round three stone lab diamond trellis engagement ring ada diamonds design ad 070

Shown with 1ct in Platinum

excellent round 1.25 carat lab diamond ring with matching round side stones set in 14k white gold shown on model. Ada Diamonds Design AD070

Shown with 1.25ct in 14k White Gold

Platinum 2.25ct Round Three Stone Lab Created Diamond Engagement Ring Ada Diamonds Design AD-070 on Hand

Shown with 1.75ct in Platinum

Platinum Three Stone Engagement Ring with 2.5 Carat Round Lab Diamond Ada Diamonds Design Number AD-070 on Model

Shown with 2.5ct in Platinum

2.5 Carat Diamonds Round Three Stone Diamond Engagement Ring in Platinum (Main View)

Shown with 2.5ct in Platinum

18k white gold ideal round 3 carat lab grown diamond with round side stones on model Ada Diamonds Design AD-070

Shown with 3ct in 18k White Gold

Diamonds set in Platinum Round Three Stone Setting

Shown with 1.5ct in Platinum

platinum 2 carat round three stone lab diamond ring with matching prong set Lab grown Diamond Wedding Band Ada Diamonds Design AD-070 and AD-071 on Model photograph

Shown with 1.75ct in Platinum

Three Stone Round Setting Lab Grown Diamond Engagement Ring Paired with a Laboratory Grown Shared Prong Wedding Band. On Model photo AD070

Shown with 2.5ct in Platinum

Shown with 3ct in 18k White Gold

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Three Stones

Round Three Stone Setting

Starting at $2,650 (Setting Only)

A brilliant classic, this three stone setting features a pair of round lab grown side stones. Available in trellis or basket style.

Three Stones

Starting at $2,650 (Setting Only)

A brilliant classic, this three stone setting features a pair of round lab grown side stones. Available in trellis or basket style.

Selection Options

Ships in 3-4 Weeks

The Ada Diamonds Difference

Personal Concierge

Your own jeweler to guide you from the first question to the finished piece.

Made to Order in NYC

Individually crafted in our New York Flagship.

Lifetime Trade-Ins

We believe in every diamond we choose, and we’ll take it back, forever.

30-Day Returns

Peace of mind, built in.

Personal Concierge

Your own jeweler to guide you from the first question to the finished piece.

Made to Order in NYC

Individually crafted in our New York Flagship.

Lifetime Trade-Ins

We believe in every diamond we choose, and we’ll take it back, forever.

30-Day Returns

Peace of mind, built in.

Reviews

“Ada Diamonds lives up to its reputation of only providing high quality lab grown diamonds. The diamond that I ended up choosing was perfect! The ring is also top-notched for the design and craftsmanship. My fiance and I could not be happier with the finished product!”

— Chanh P.

“Ada Diamonds turned a complicated purchase into the simplest process, and they are worth every penny. My aunt used to be in the jeweler business and this ring got her seal of approval for quality craftsmanship. Love it!”

— Erin V.

“Incredible experience working with Ada Diamonds. Fantastic client service, from the initial video consultation to the constant responsiveness. In addition to the service, the ring is absolutely beautiful. I can't recommend Ada enough.”

— Ian H.

“I couldn't be happier with my overall exceptional experience I had with Ada Diamonds. I really appreciate the quality craftsmanship of the ring itself, and the conflict-free, ethical diamonds.”

— Mark C.

“We had a fantastic experience with Ada! My Concierge was so helpful in finding the perfect engagement ring for us. I would absolutely recommend Ada to anyone!”

— Matt E.

“The ring was perfect. It looks just a great as anything you'd buy at Tiffany's with the piece of mind about its origins. I'd highly recommend Ada to anyone looking.”

— Josh R.

“I recently bought my fiancee's ring at Ada and it was an awesome experience. I highly recommend visiting Ada and checking out what they have to offer!”

— Colin J.

“Ada was friendly, respectful and so encouraging. I cannot speak highly enough to their customer experience, and most importantly, the quality of their diamonds and rings! Their warranty speaks for itself.”

— Taylor G.

“If you're looking for high quality lab grown diamonds, work with Ada, they will make sure you get what you want, you'll have full control over customization of your ring, and they only sell amazing diamonds!”

— Paul P.

“The ring came out absolutely stunning and was exactly what my fiancé wanted per the specs she had provided. I would highly highly recommend Ada diamonds to anybody.”

— Evan G.

“Ada Diamonds lives up to its reputation of only providing high quality lab grown diamonds. The diamond that I ended up choosing was perfect! The ring is also top-notched for the design and craftsmanship. My fiance and I could not be happier with the finished product!”

— Chanh P.