White Default Shadow

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.

Platinum Princess and Baguette Diamond Engagement Ring featuring 3.0 ct Diamonds (Main View)

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

Asscher and Baguette Setting

Cushion and Baguette Setting

Emerald and Baguette Setting

Oval and Baguette Setting

Radiant and Baguette Setting

Round and Baguette Setting

White Gold Princess and Baguette Setting featuring Hand Selected Lab Diamonds (Main View)

Hand Selected Lab Diamonds set in White Gold Princess and Baguette Diamond Engagement Ring (Profile View)

High Quality Diamonds set in White Gold Princess and Baguette Diamond Engagement Ring (Side View)

Yellow Gold Princess and Baguette Setting featuring Diamonds (Main View)

High Quality Lab Created Diamonds Princess and Baguette Diamond Engagement Ring in Yellow Gold (Main View)

Diamonds set in Rose Gold Princess and Baguette Setting (Main View)

Rose Gold Princess and Baguette Setting featuring Lab Diamonds (Main View)

Platinum & Yellow Gold Princess and Baguette Setting featuring Hand Selected Diamonds (Main View)

Hand Selected Lab Grown Diamonds Princess and Baguette Diamond Engagement Ring in Platinum & Yellow Gold (Profile View)

Lab Diamonds set in Platinum & Yellow Gold Princess and Baguette Setting (Profile View)

Lab Created Diamonds Princess and Baguette Diamond Engagement Ring in Platinum & Rose Gold (Main View)

Platinum & Rose Gold Princess and Baguette Diamond Engagement Ring featuring High Quality Lab Diamonds (Profile View)

Platinum & Rose Gold Princess and Baguette Setting featuring Lab Grown Diamonds (Main View)

Diamonds Princess and Baguette Setting in Platinum & Rose Gold (Profile View)

platinum 3 ct princess cut and baguette lab diamond engagement ring ada diamonds design ad 478 macro

Platinum Princess and Baguette Setting featuring 3.0 ct Lab Diamonds (Profile View)

White Gold 2 Carat Princess and Baguette Three Stone Lab Diamond Ring Ada Diamonds Design AD-478 Macro

White Gold 2ct Princess and Baguette Three Stone Lab Created Diamond Ring Ada Diamonds Design AD-478 in Box

Platinum Princess and Baguette Diamond Engagement Ring featuring High Quality 1.75 ct Lab Diamonds (Main View)

platinum 2 ct princess cut and tapered baguette three stone man made diamond engagement ring ada diamonds design ad 478 on model

platinum 3.5ct princess cut lab diamond ring with baguette side stones ada diamonds design ad 478 on model

platinum 3.5ct princess cut man made diamond three stone engagement ring with baguette side stones ada diamonds design 478 profile on model

Platinum Princess and Baguette Diamond Engagement Ring featuring 3.0 Carat Synthetic Diamonds (Main View)

3.5ctw Princess and Baguette Three Stone Engagement Ring in Platinum

3.5ctw Princess and Baguette Three Stone Engagement Ring in Platinum Profile View

Your Choice of Gold: 0.10ct Each Side Stones (0.20ctw): $2,450 USD0.15ct Each Side Stones (0.30ctw): $2,550 USD0.20ct Each Side Stones (0.40ctw): $2,650 USD0.35ct Each Side Stones (0.70ctw): $3,200 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. Platinum and two-tone available for an additional $300 fee. Subject to availability; all side stone weights and measurements are approximate.

A distinctive three stone engagement ring setting featuring conflict-free, lab grown baguette side stones. 

Princess and Baguette Setting

Three Stone Baguette

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.