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

platinum 1.5ct cushion cut manmade diamond solitaire engagement ring platinum ada diamonds design ad 221

Shown with 1.5ct in Platinum

Shown with 4ct in Platinum

Platinum 2.5 Carat Cushion Cut Man Made Diamond Solitaire Engagement Ring in Platinum Ada Diamonds Design Number AD-221 Artistic Image in Velvet Box

Shown with 2.5ct in Platinum

platinum 3 carat cushion cut lab diamond solitaire engagement ring ada diamonds design ad 221 macro

Shown with 3ct in Platinum

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

Shown with 2ct in Platinum

2 ct cushion cut petite four prong lab diamond solitaire engagement ring ada diamonds design ad 221

Shown with 2ct in Platinum

two-tone platinum and yellow gold 2.5 ct cushion cut lab diamond petite solitaire engagement ring design ad 221

Shown with 2.5ct in Platinum

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

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

Shown with 1.5ct in Platinum

Platinum 1.75 Carat Cushion Cut Diamond Solitaire Engagement Ring on Hand featuring Man Made Diamonds Ada Diamonds Design AD221

Shown with 1.75ct in Platinum

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

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

Shown with 3.25ct in Platinum

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

Shown with 4ct in Platinum

Lab Created Diamond Cushion Solitaire Engagement Ring On Model Design AD221

Platinum Cushion Petite Four Prong Solitaire featuring 3.5 ct Lab Diamonds (Side View)

Shown with 3.5ct in Platinum

Shown with 2ct in Platinum

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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.