Engagement Rings

White Gold Round Classic Six Prong Solitaire Diamond Engagement Ring featuring Diamonds (Main View)

Shown with 2ct in 18k White Gold

Man Made Diamonds Round Classic Six Prong Solitaire in White Gold (Side View)

Shown with 2ct in 18k White Gold

platinum 3 ct round six prong lab diamond solitaire engagement ring ada diamonds design ad 067 macto

Shown with 3ct in Platinum

3.75 carat round classic six prong lab diamond solitaire engagement ring in platinum ada diamonds design ad 067

Shown with 3.75ct in Platinum

3.75 Carat Diamonds set in Platinum Round Classic Six Prong Solitaire Diamond Engagement Ring (Side View)

Shown with 3.75ct in Platinum

platinum 4 ct round six prong solitaire engagement ring lab diamonds ada diamonds design ad 067

Shown with 3.75ct in Platinum

platinum 4 ct round six prong lab diamond solitaire engagement ring platinum ada diamonds design ad 067 macro

Shown with 3.75ct in Platinum

custom 4 ct six prong round lab diamond solitaire engagement ring ada diamonds design ad 067 side view

Shown with 3.75ct in Platinum

Shown with 3.5ct in Platinum

Platinum Round Classic Six Prong Solitaire featuring 5.0 ct Diamonds (Main View)

Shown with 5.5ct in Platinum

1.25 ctw Diamonds set in Platinum Round Classic Six Prong Solitaire (Main View)

Shown with 1.25ct in Platinum

High Quality 1.5 Carat Synthetic Diamonds set in Platinum Round Classic Six Prong Solitaire (Main View)

Shown with 1.5ct in Platinum

Shown with 3ct in Platinum

3.0 ctw Lab Diamonds set in Platinum Round Classic Six Prong Solitaire

Shown with 3ct in Platinum

Shown with 1.5ct in Platinum

Platinum Round Classic Six Prong Solitaire featuring Hand Selected 4.0 ct Diamonds (Main View)

Shown with 4ct in Platinum

Platinum Round Classic Six Prong Solitaire Diamond Engagement Ring featuring 2.0 Carat Man Made Diamonds (Main View)

Shown with 2ct in Platinum

Platinum Round Classic Six Prong Solitaire Diamond Engagement Ring featuring 2.75 Carat Diamonds (Side View)

Shown with 2.75ct in Platinum

Platinum One Carat Tiffany Setting Lab Diamond Engagement Ring Ada Diamonds Design Number AD-067 On Model

Shown with 1ct in Platinum

platinum 1.25ct round six prong lab diamond solitaire engagement ring ada diamonds design ad 067 on model

Shown with 1.25ct in Platinum

18k White Gold 1.75 Carat Round Brilliant Six Prong Solitaire Ring made with Lab Diamonds Ada Diamonds Design Number AD-67 on Model

Shown with 1.75ct in 18k White Gold

platinum 2.25ct round lab grown diamond six prong solitaire engagement ring ada diamonds design ad067 on model

Shown with 2.25ct in Platinum

2.5 Carat Lab Diamonds set in Platinum Round Classic Six Prong Solitaire Diamond Engagement Ring (Main View)

Shown with 2.5ct in Platinum

2.75 Carat Round Brilliant Classic Six Prong Solitaire Lab Diamond Engagement Ring On Model Design AD-067

Shown with 2.75ct in Platinum

3.0 Carat Lab Diamonds Round Classic Six Prong Solitaire Diamond Engagement Ring in Platinum (Main View)

Shown with 3ct in Platinum

3.25ct round lab diamond in six prong solitaire with wedding band

Shown with 3.25ct in Platinum

platinum round 3.5ct six prong solitaire engagement ring ada diamonds design ad 067 on model

Shown with 3.5ct in Platinum

3.75 Carat Diamonds Round Classic Six Prong Solitaire Diamond Engagement Ring in Platinum (Main View)

Shown with 3.75ct in Platinum

plaitnum four carat round six prong solitaire with lab grown diamond ada diamonds design ad067

Shown with 4ct in Platinum

5.5 ct Lab Created Diamonds set in Platinum Round Classic Six Prong Solitaire Diamond Engagement Ring (Main View)

Shown with 5.5ct in Platinum

Exceptional Quality 3.75 ctw Man Made Diamonds set in Platinum Round Classic Six Prong Solitaire (Main View)

Shown with 3.75ct in Platinum

Round Classic Six Prong Solitaire Diamond Engagement Ring featuring 2.75 ct Diamonds (Main View)

Shown with 2.75ct in Platinum

Shown with 3ct in Platinum

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Solitaires

Round Classic Six Prong Solitaire

Starting at $1,450 (Setting Only)

An absolute classic, this setting can be customized with or without a knife edge. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm.

Solitaires

Starting at $1,450 (Setting Only)

An absolute classic, this setting can be customized with or without a knife edge. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm.

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.