Engagement Rings

18k White Gold Cushion Classic Four Prong Solitaire Diamond Engagement Ring featuring 2.0 Carat Lab Diamonds (Main View)

Shown with 2ct in 18k White Gold

Lab Diamonds set in White Gold Cushion Classic Four Prong Solitaire (Main View)

Shown with 2ct in 18k White Gold

White Gold Cushion Classic Four Prong Solitaire Diamond Engagement Ring featuring Lab Diamonds (Side View)

Shown with 2ct in 18k White Gold

Diamonds Cushion Classic Four Prong Solitaire in White Gold (Side View)

Shown with 2ct in 18k White Gold

Yellow Gold Cushion Classic Four Prong Solitaire featuring 1.75 Carat Man Made Diamonds (Main View)

Shown with 1.75ct in 14k Yellow Gold

Yellow Gold Cushion Classic Four Prong Solitaire Diamond Engagement Ring featuring 1.75 ct Diamonds (Side View)

Shown with 1.75ct in 14k Yellow Gold

Yellow Gold Cushion Classic Four Prong Solitaire Diamond Engagement Ring featuring 1.75 ct Lab Diamonds (Main View)

Shown with 1.75ct in 14k Yellow Gold

Platinum 3.5ct Cushion Cut Lab Grown Diamond Solitaire Engagement Ring Ada Diamonds Design AD-335 Macro

Shown with 3.5ct in Platinum

Two Tone White and Rose Gold 2ct Cushion Lab Diamond Classic Solitaire Ada Diamonds Design AD-335 Artistic

Shown with 2ct in Platinum & 14k Rose Gold

14k Yellow Gold 1.25 Carat Cushion Cut Lab Created Diamond Solitaire Ada Diamonds Design AD-335 Macro

Shown with 1ct in 14k Yellow Gold

Shown with 2ct in 14k Yellow Gold

3.25 ct Lab Diamonds Cushion Classic Four Prong Solitaire Diamond Engagement Ring in 14k Yellow Gold (Side View)

Shown with 3.25ct in 14k Yellow Gold

1 Carat Cushion Solitaire Engagement Ring with Lab Diamond Ada Diamonds Design AD-335 on Model

Shown with 1.25ct in Yellow Gold

1.5ct cushion cut lab diamond in classic four prong solitaire

Shown with 1.5ct in 18k White Gold

1.75ct cushion cut lab diamond in classic four prong solitaire

Shown with 1.75ct in Yellow Gold

White and Rose Gold 2 Carat Cushion Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-335 on Model

Shown with 2ct in White Gold

2.25ct cushion cut lab diamond in classic four prong solitaire

Shown with 2.25ct in Platinum

2.5ct cushion cut lab diamond in classic four prong solitaire

Shown with 2.5ct in 14k Platinum

2.75ct cushion cut lab diamond in classic four prong solitaire

Shown with 2.75ct in Platinum

Yellow Gold Cushion Classic Four Prong Solitaire Diamond Engagement Ring featuring Exceptional Quality 3.25 ct Lab Grown Diamonds (Main View)

Shown with 3.25ct in 14k Yellow Gold

Platinum 3.5 Carat Cushion Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-335 on Model

Shown with 3.5ct in Platinum

18k Yellow Gold 3ct Cushion Lab Created Diamond Solitaire Engagement Ring Ada Diamonds Design AD-335 on Model

Shown with 3.25ct in 14k Yellow Gold

Shown with 1.5ct in 14k Yellow Gold

Shown with 3.5ct in Platinum

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Solitaires

Cushion Classic Four Prong Solitaire

Starting at $1,250 (Setting Only)

Elegant and timeless, this setting features four prongs for maximum security. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm.

Solitaires

Starting at $1,250 (Setting Only)

Elegant and timeless, this setting features four prongs for maximum security. 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.