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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.

Cushion Three Stone Pavé Setting - Ada Diamonds

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>

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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_!

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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

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White Gold Cushion Three Stone Pavé Diamond Engagement Ring featuring 2.0 Carat Diamonds (Main View)

White Gold Cushion Three Stone Pavé Setting featuring 2.0 ct Lab Diamonds (Main View)

White Gold Cushion Three Stone Pavé Diamond Engagement Ring featuring Exceptional Quality 2.0 Carat Diamonds (Profile View)

White Gold Cushion Three Stone Pavé Setting featuring Hand Selected 2.0 Carat Lab Diamonds (Profile View)

White Gold Cushion Three Stone Pavé Diamond Engagement Ring featuring 2.0 Carat Diamonds (Side View)

2.0 Carat Man Made Diamonds set in White Gold Cushion Three Stone Pavé Setting (Side View)

18kt Yellow Gold Cushion Three Stone Pavé Setting featuring High Quality 2.0 Carat Lab Diamonds (Main View)

Yellow Gold Cushion Three Stone Pavé Diamond Engagement Ring featuring 2.0 Carat Lab Diamonds

Rose Gold Cushion Three Stone Pavé Diamond Engagement Ring featuring 2.0 Carat Lab Diamonds (Main View)

2.0 ctw Lab Grown Diamonds Cushion Three Stone Pavé Setting in Rose Gold (Main View)

Yellow Gold Cushion Three Stone Pavé Setting featuring 2.0 Carat Diamonds (Main View)

Yellow Gold Cushion Three Stone Pavé Setting featuring 2.0 ct Diamonds (Main View)

Rose Gold Cushion Three Stone Pavé Setting featuring Hand Selected 2.0 Carat Lab Diamonds (Main View)

Rose Gold Cushion Three Stone Pavé Setting featuring 2.0 Carat Diamonds (Main View)

three stone pave ring with 2ct lab grown cushion cut diamond center stone

platinum 3 carat cushion cut lab diamond three stone ring with diamond band ada diamonds design ad 476 macro

18k white gold 3 carat cushion pavé lab created diamond engagement ring ada diamonds design ad 476 profiile

custom three stone pave ring with 2.5 ct lab grown cushion cut diamond center stone

platinum three stone pave ring with 2.5ct lab grown cushion cut diamond

Platinum Cushion Three Stone Pavé Diamond Engagement Ring featuring 1.75 ct Lab Diamonds (Profile View)

platinum 3 carat cushion cut pavé lab diamond engagement ring ada diamonds design ad 476 on model

custom three stone pave ring with 2.5 carat lab grown cushion cut diamond center stone

platinum 3 carat cushion cut pavé lab diamond engagement ring ada diamonds design ad 476 profile on model

2.5 Carat Diamonds Cushion Three Stone Pavé Diamond Engagement Ring in Platinum (Main View)

3ctw Cushion Three Stone Pavé Engagement Ring in Platinum

Platinum Cushion Three Stone Pavé Diamond Engagement Ring featuring 2.5 Carat Created Diamonds (Profile View)

3ctw Cushion Three Stone Pavé Engagement Ring Platinum Profile View

Your Choice of Gold: 0.25ct Each Side Stones with 1.6mm pavé: $3,400 USD0.40ct Each Side Stones with 1.8mm pavé: $4,200 USD Starting at price is for the setting and side stones only (center stone priced separately) and includes DEF/VS lab grown diamond side stones, with pavé set in 3/4 coverage. Side stones at or below 0.50ct will be uncertified and hand-selected to match your center stone. Side stones above 0.50ct are available upon request and are individually certified. Additional pavé sizes available: 2.0mm, 2.2mm, 2.4mm.  ﻿﻿Platinum and two-tone available for an additional $300 fee. This style must be modified to accommodate a mixed-metal setting.

Stunning and spectacular, this setting features a matched pair of cushion cut lab grown diamond side stones. Available in trellis or basket style.

Three Stone U Pave

Cushion Three Stone Pavé Setting

Cushion Three Stone Pave

Custom made-to-order three stone 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.