Engagement Rings

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

Shown with 2ct in 18k White Gold

White Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring Diamonds (Main View)

Shown with 2ct in 18k White Gold

Lab Diamonds Cushion Petite Four Prong Solitaire Diamond Engagement Ring in White Gold (Side View)

Shown with 2ct in 18k White Gold

Lab Diamonds set in White Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring (Side View)

Shown with 2ct in 18k White Gold

platinum 2 carat elongated cushion cut lab diamond petite four prong solitaire engagement ring ada diamonds design ad 221 macro

Shown with 2ct in Platinum

Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring Lab Diamonds (Main View)

Shown with 4ct in Platinum

14k White Gold Cushion Cut Lab Diamond Solitaire Engagement Ring with Hidden Halo Ada Diamonds Design Number AD221 Artistic Image

Shown with 1.75ct in 14k White Gold

Shown with 3ct in Platinum

14k Yellow Gold 2.75ct Cushion Cut Lab Created Diamond Solitaire with Knife Edge Band and Hidden Halo Ada Diamonds Design Ad-221 Macro

Shown with 2.5ct in 14k Yellow Gold

14k Yellow Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring 4.0 Carat Lab Diamonds (Side View)

Shown with 4ct in 14k Yellow Gold

elongated lab grown cushion diamond in solitaire

Shown with 3ct in Platinum & 14k Yellow Gold

Platinum & Rose Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring 4.75 Carat Diamonds (Main View)

Shown with 4.75ct in Platinum & 14k Rose Gold

Shown with 4.75ct in Platinum & 14k Rose Gold

Cushion Petite Four Prong Solitaire featuring Diamonds

Shown with 4ct in 14k Yellow Gold

platinum 1ct cushion cut lab diamond solitaire engagement ring ada diamonds design ad 221

Shown with 1ct in Platinum

1.25 Carat Diamonds Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Platinum (Main View)

Shown with 1.25ct in Platinum

18k Yellow Gold 1.5ct Cushion Cut Lab Diamond Solitaire with Hidden Halo Ada Diamonds Design AD-221 on Model

Shown with 1.5ct in 18k Yellow Gold

14k yellow gold 1.5ct cushion cut lab diamond solitaire engagement ring ada diamonds design ad 221 on model

Shown with 1.5ct in 14k Yellow Gold

platinum 1.5ct Cushion Cut Lab Diamond Solitaire with Hidden Halo Ada Diamonds Design AD-221 on Model

Shown with 1.5ct in Platinum

1.5 Carat Diamonds Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

Shown with 1.75ct in 14k Yellow Gold

Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring 2.0 Carat Diamonds

Shown with 2ct in 14k Yellow Gold

2ct yellow gold cushion cut lab diamond solitaire engagement ring

Shown with 2ct in Yellow Gold

two tone yellow gold and platinum 2.25ct cushion cut lab diamond solitaire engagement ring ada diamonds design ad 221 on model

Shown with 2.25ct in Platinum & 14k Yellow Gold

Yellow Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring Exceptional Quality 2.25 Carat Created Diamonds

Shown with 2.25ct in Yellow Gold

Shown with 2.5ct in 18k Yellow Gold

elongated 2.5 carat cushion cut lab diamond solitaire engagement ring two tone platinum and yellow gold ada diamonds design ad 221

Shown with 2.5ct in Platinum

platinum 2.75ct cushion cut man made diamond solitaire engagement ring platinum ada diamonds design ad 221

Shown with 2.75ct in Platinum

Shown with 2.5ct in 14k Yellow Gold

Shown with 2.75ct in Platinum

18k Yellow Gold Solitaire Engagement Ring with 2.75 Carat Cushion Cut Diamond and Hidden Halo on Hand Ada Diamonds Design Number 221

Shown with 2.75ct in 18k Yellow Gold

3ct elongated cushion lab grown solitaire

Shown with 3ct in Yellow Gold

18k Yellow Gold Classic Solitaire Diamond Ring with 3.0 Carat Cushion Cut Lab Diamond on Model Ada Diamonds Design 221

Shown with 3ct in 18k Yellow Gold

14k yellow gold 3 carat cushion cut solitaire engagement ring ada diamonds design ad 221 on model

Shown with 3.25ct in 14k Yellow Gold

Platinum Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring 3.25 ctw Lab Diamonds ()

Shown with 3.25ct in Platinum

14k yellow gold four carat lab created diamond solitaire engagement ring with hidden halo ada diamonds design ad 221 on model

Shown with 4ct in 14k Yellow Gold

platinum 4 carat cushion cut lab diamond solitaire engagement ring ada diamonds design ad 221 on model

Shown with 4ct in Platinum

5ct cushion lab diamond in two-tone solitaire

Shown with 4.75ct in Platinum & 14k Rose Gold

14k yellow gold 4 ct cushion cut lab created diamond petite solitaire engagement ring with baguette 3/4 eternity band on model and ada diamonds design ad 221

Shown with 4ct in 14k Yellow Gold

Shown with 2ct in Platinum

Shown with 4ct in 14k Yellow Gold

Shown with 4.75ct in Platinum & 14k Rose Gold

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Solitaires

Cushion Petite Four Prong Solitaire

Starting at $1,250 (Setting Only)

Lovely and timeless, this setting features petite prongs and a gallery wire for maximum light exposure. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm.

Solitaires

Starting at $1,250 (Setting Only)

Lovely and timeless, this setting features petite prongs and a gallery wire for maximum light exposure. 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.