Engagement Rings

Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in White Gold (Main View)

Shown with 2ct in 18k White Gold

White Gold Oval Cathedral Solitaire featuring Lab Diamonds (Side View)

Shown with 2ct in 18k White Gold

Platinum Oval Cathedral Solitaire featuring 2.0 Carat Lab Diamonds (Main View)

Shown with 2ct in Platinum

1.5 ct Lab Created Diamonds set in Platinum Oval Cathedral Solitaire Diamond Engagement Ring (Main View)

Shown with 1.5ct in Platinum

1.5 ct Diamonds set in Platinum Oval Cathedral Solitaire (Side View)

Shown with 1.5ct in Platinum

3.5 ct Lab Grown Diamonds set in White Gold Oval Cathedral Solitaire (Main View)

Shown with 3.5ct in 18k White Gold

Exceptional Quality 3.5 Carat Lab Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in White Gold (Side View)

Shown with 3.5ct in 18k White Gold

Shown with 2ct in 18k White Gold

Platinum 3ct Oval Cut Lab Created Diamond Cathedral Solitaire Ada Diamonds Design AD-326 Macro

Shown with 2.75ct in Platinum

Platinum 1.75ct Oval Cathedral Solitaire with Lab Diamond Ada Diamonds Design AD-326 Macro

Shown with 1.25ct in Platinum

Shown with 2.5ct in Platinum

White Gold 1.25ct Oval Cathedral Lab Created Diamond Solitaire Ada Diamonds Design AD-326 on Model

Shown with 1.25ct in Platinum

Platinum 2.25ct Oval Synthetic Diamond Lab Created Diamond Solitaire Engagement Ring Ada Diamonds Design AD-326 On Hand

Shown with 2.25ct in Platinum

Platinum 2.5 Carat Oval Lab Diamond Engagement Ring Ada Diamonds Design AD-326 on Model

Shown with 2.5ct in Platinum

platinum 3.5ct oval cathedral solitaire engagement ring wiht hidden halo ada diamonds design ad 326 on model

Shown with 3.5ct in Platinum

Shown with 1.5ct in Platinum

2.0 Carat Lab Created Diamonds set in Platinum Oval Cathedral Solitaire Diamond Engagement Ring (Main View)

Shown with 2ct in Platinum

Shown with 3.5ct in 18k White Gold

Shown with 3.5ct in Platinum

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Solitaires

Oval Cathedral Solitaire

Starting at $1,350 (Setting Only)

Elegant and simple, this solitaire setting features raised cathedral shoulders. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm.

Solitaires

Starting at $1,350 (Setting Only)

Elegant and simple, this solitaire setting features raised cathedral shoulders. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm.

Selection Options

Ships in 2-3 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.