Engagement Rings

Exceptional Quality Lab Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in White Gold (Main View)

Shown with 2ct in 18k White Gold

Diamonds Radiant Cathedral Solitaire in White Gold (Side View)

Shown with 2ct in 18k White Gold

Diamonds set in White Gold Radiant Cathedral Solitaire (Side View)

Shown with 2ct in 18k White Gold

1.75ct radiant cut lab diamond in cathedral solitaire engagement ring in 18k white gold

Shown with 1.75ct in White Gold

Shown with 1.75ct in 18k White Gold

2.0 Carat Lab Diamonds Radiant Cathedral Solitaire in Platinum (Side View)

Shown with 2ct in Platinum

14k yellow gold 2.75ct radiant cut lab diamond solitaire engagement ring with hidden halo ada diamonds design ad 331 macro

Shown with 2.75ct in 14k Yellow Gold

2.0 ctw Diamonds set in 14k Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring (Main View)

Shown with 2ct in 14k Yellow Gold

2.75 Carat Lab Diamonds Radiant Cathedral Solitaire in Yellow Gold (Main View)

Shown with 2.75ct in 18k Yellow Gold

5 carat radiant cut lab created diamond engagement ring in two tone platinum and yellow gold ada diamonds design ad331 macro

Shown with 4.75ct in Platinum & 18k Yellow Gold

1.25 ct Lab Created Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in 14k Yellow Gold (Main View)

Shown with 3.75ct in 14k Platinum

High Quality 1.75 ctw Diamonds set in 18k White Gold Radiant Cathedral Solitaire Diamond Engagement Ring (Main View)

Shown with 1.75ct in 18k White Gold

14k Yellow Gold Radiant Cathedral Solitaire featuring 2.0 ctw Lab Grown Diamonds (Main View)

Shown with 2ct in 14k Yellow Gold

2.75 ctw Diamonds Radiant Cathedral Solitaire in Yellow Gold (Main View)

Shown with 2.75ct in 18k Yellow Gold

3.75 ctw Lab Diamonds Radiant Cathedral Solitaire in Platinum (Main View)

Shown with 3.75ct in Platinum

two-tone yellow gold and platinum 5 ct radiant cut lab diamond engagement ring ada diamonds design ad 331 on model

Shown with 4.75ct in Platinum & 18k Yellow Gold

Shown with 2.75ct in 18k Yellow Gold

Shown with 1.75ct in 18k White Gold

Shown with 2ct in 14k Yellow Gold

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Solitaires

Radiant Cathedral Solitaire

Starting at $1,350 (Setting Only)

Elegant and timeless, this setting features petite prongs and 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 timeless, this setting features petite prongs and 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.