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A sample of our hand-selected, pre-vetted, in-house inventory, immediately available for sale. Want to see more options? <a href="/inquire">Inquire</a> now for a curated list.&nbsp;

Our friendly Diamond Concierge Team is available to answer any questions you may have, help you choose a spectacular lab diamond, and customize this engagement ring to your exact specifications.

ER PDP Checkout Fine Print

Complimentary engraving up to 10 characters. Longer engravings or those with special characters may be available for an extra charge upon inquiry. Please note, resizing engraved rings may require an additional fee.

Not sure what size halo is best? <a href="/inquire">Please inquire</a> and a Diamond Concierge will be happy to discuss with you.

Always custom created, never mass-produced. We proudly craft all of our engagement rings in the USA.

Visit <a href="/visit">one of our showrooms</a> or join the thousands of clients around the world who work with us <a href="/diamond-concierge-process">entirely virtually</a>.

After checkout, a Concierge will contact you via email to confirm your order. Prior to production, you will receive a rendering of your ring's exact dimensions for your approval. If you are unresponsive, your order may be canceled.Have questions? Not ready to checkout? <a href="/inquire">Inquire</a> now and a Concierge will respond within 1 business day.&nbsp;

Setting Price as Currently Configured

PDP ER - Setting Price as Currently Configured

Free US Shipping fully insured with signature required to a residence, business address, or Fedex Office. Purchases over $15,000 will ship FedEx Priority Overnight. Purchases of less than $15,000 will ship Fedex Two Day. International Shipping to 69 countries, fully insured. International shipping fees start at $75 USD.

When it comes to durability and having an engagement ring that stands the test of time, platinum is our recommended choice for a white metal.

3.0 ct Created Diamonds set in Platinum & Yellow Gold Cushion Petite Four Prong Solitaire (Side View)

1.5 ctw Lab Grown Diamonds set in Platinum Cushion Petite Four Prong Solitaire Diamond Engagement Ring (Main View)

Not sure what style your sweetheart desires? Ensure your proposal is a complete surprise! A non-customized version of this setting qualifies for our <a href="/proposal-settings">Proposal Setting program</a>.

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Read Our <a href="/synthetic-diamond-facts-and-misconceptions/frequently-asked-questions-about-lab-grown-diamonds">Frequently Asked Questions</a>See Our <a href="/buy-lab-diamonds">Diamond Pricing</a>

New to Lab Diamonds?

Overlay Centered

A Purchase This Important Deserves&nbsp;an <a href="/ada-vs-competition">Impeccable Buying Experience</a>

Why Choose Ada Diamonds?

Shop <a href="/wedding-bands">Wedding Bands</a> Shop <a href="/mens-wedding-bands">Men’s Bands</a>

From Will You? to _I Do_!

emerald-eternity-band-with-lab-grown-diamonds.jpg

Ada was founded by a husband-wife team. <a href="/about-ada-diamonds">Our Genesis</a> &amp; <a href="/ethical-supply-chains">Our Values</a>

Grown From Love

Founders of Ada Diamonds Sitting on a Beach at Sunset

Ready to Begin Your Concierge Experience?

Engagement Modal Form

Ada Diamonds specializes in large, sensational diamonds of superlative quality. Our diamonds are cut from the highest purity diamond crystals, have optimal cut and sparkle, and are always eye clean. Much like mined diamonds, lab diamonds are priced based on their quality characteristics. Use the tool below to understand our pricing:

Ada Diamonds is the Leading Luxury Purveyor of Lab Diamonds

Round Petite Four Prong Solitaire

Asscher Petite Four Prong Solitaire

Emerald Petite Four Prong Solitaire

Oval Petite Four Prong Solitaire

Pear Petite Solitaire

Princess Petite Four Prong Solitaire

Radiant Petite Four Prong Solitaire

Cushion Petite Four Prong Pavé Setting

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

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

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

White Gold Cushion Petite Four Prong Solitaire featuring Lab Diamonds (Profile View)

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

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

Yellow Gold Cushion Petite Four Prong Solitaire featuring Hand Selected Man Made Diamonds (Main View)

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

Hand Selected Diamonds Cushion Petite Four Prong Solitaire in Yellow Gold (Main View)

Yellow Gold Cushion Petite Four Prong Solitaire featuring High Quality Man Made Diamonds (Main View)

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

Lab Grown Diamonds set in Rose Gold Cushion Petite Four Prong Solitaire (Main View)

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

Platinum & Yellow Gold Cushion Petite Four Prong Solitaire featuring Lab Created Diamonds (Main View)

High Quality Diamonds Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Platinum & Yellow Gold (Main View)

Lab Diamonds Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Platinum & Yellow Gold (Profile View)

Lab Diamonds set in Platinum & Yellow Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring (Profile View)

Platinum & Yellow Gold Cushion Petite Four Prong Solitaire featuring Lab Diamonds (Profile View)

Platinum & Rose Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring Hand Selected Synthetic Diamonds (Main View)

Lab Grown Diamonds set in Platinum & Rose Gold Cushion Petite Four Prong Solitaire (Main View)

Hand Selected Diamonds Cushion Petite Four Prong Solitaire in Platinum & Rose Gold (Profile View)

Lab Diamonds Cushion Petite Four Prong Solitaire in Platinum & Rose Gold (Profile View)

Platinum & Rose Gold Cushion Petite Four Prong Solitaire featuring High Quality Created Diamonds (Main View)

Hand Selected Created Diamonds Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Platinum & Rose Gold (Main View)

Lab Diamonds set in Platinum & Rose Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring (Profile View)

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

platinum 2ct cushion cut lab diamond solitaire engagement ring ada diamonds design ad 221 profile

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

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

Platinum 3 Carat Cushion Cut Solitaire Engagement Ring with Hidden Halo Featuring Lab Diamonds Ada Diamonds Design AD-221 Profile View

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

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

14k yellow gold 2.5ct cushion cut lab diamond solitaire engagement ring ada diamonds design ad 221 profile

Cushion Petite Four Prong Solitaire featuring High Quality Lab Diamonds (Profile View)

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

rose gold cushion cut petite four prong lab diamond solitaire engagement ring ada diamonds design ad 221

rose gold cushion cut manmade diamond solitaire engagement ring ada diamonds design ad 221

elongated lab grown cushion diamond in solitaire

Platinum & Yellow Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring 3.0 Carat Man Made Diamonds (Side View)

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

Cushion Petite Four Prong Solitaire featuring Diamonds

14k Yellow Gold 2ct Cushion Solitaire Lab Diamond Ring Ada Diamonds Design AD-221 Macro

14k Yellow Gold 2ct Cushion Cut Solitaire Lab Diamond Ring Ada Diamonds Design AD-221 Profile

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

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

yellow gold 3 carat cushion lab diamond solitaire engagement ring ada diamonds design ad 221 macro

18k Yellow Gold 3ct Square Cushion Cut Lab Diamond Solitaire Engagement Ring with Hidden Halo Ada Diamond Design AD-221 Artistic

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

18k Yellow Gold 1.5ct Elongated Cushion Cut Lab Diamond Solitaire Engagement Ring with Hidden Halo Ada Diamond Design AD-221 Artistic

18k Yellow Gold 1.5ct Cushion Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-221

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

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

14k yellow gold 3ct cushion cut petite solitaire engagement ring ada diamonds design ad221

High Quality 3.0 Carat Diamonds Cushion Petite Four Prong Solitaire in Platinum & Yellow Gold (Main View)

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

Platinum & 18kt Yellow Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring 3.5 ct Diamonds (Profile View)

18k Yellow Gold Two Carat Cushion Cut Solitaire Engagement Ring Featuring a Lab Created Diamond Ada Diamonds Design Number 221 in Box

14k Yellow Gold 2.75ct Cushion Lab Diamond Solitaire Engagement Ring with Knife Edge Band and 1mm Hidden Halo Ada Diamonds Design Ad-221 Profile

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

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

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

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

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

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

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

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

2ct yellow gold cushion cut lab diamond solitaire engagement ring

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

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

Custom Two Tone 18k White and Yellow Gold 2.5 Carat Cushion Cut Low Profile Solitaire Engagement Ring on Hand Ada Diamonds Design Number 221

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

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

14k Yellow Gold 2.5 Carat Cushion Cut Low Profile Solitaire Engagement Ring on Hand Ada Diamonds Design Number 221

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

3ct elongated cushion lab grown solitaire

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

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

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

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

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

5ct cushion lab diamond in two-tone solitaire

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

14k Yellow Gold Cushion Petite Four Prong Solitaire featuring 2.25 Carat Man Made Diamonds (Side View)

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)

Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring Lab Diamonds

"Unveiling the Ada-221: 2.0ct Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Platinum"

Lab Grown Diamonds set in Platinum Cushion Petite Four Prong Solitaire

"Unveiling the 2.0ct Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Platinum"

Yellow Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring Diamonds

"4.0ct Cushion Cut Diamond in 14k Yellow Gold Petite Four Prong Solitaire Engagement Ring Reveal - AD-221"

Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring Diamonds

Unveiling the 4.75ct Cushion Petite Four Prong Solitaire Diamond Engagement Ring in Platinum & 14k Rose Gold

Your Choice of Gold: $1,250 USD Platinum &amp; Two-Tone: $1,500 USD Pricing is for setting only - center stone priced separately. Add a hidden halo for $500 USD.

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.

Cushion Petite Four Prong Solitaire

Petite Solitaires

Custom made-to-order solitaire engagement ring featuring conflict-free lab diamonds hand-selected for quality, fire, and brilliance. Available options: platinum, 14k or 18k gold: white, yellow, rose. Ada Diamonds is the leading luxury purveyor and the best place to buy a lab diamond. Virtual consultations available worldwide; private in-person appointments available in San Francisco, New York, and Austin TX.