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A US-based lab diamond expert will respond within 1 business day.&nbsp;

May We Help You?

A Diamond Concierge is available to help you choose the best option.

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.

Thank You for Your Inquiry! 

An Ada Diamonds concierge will contact you via email shortly. You can expect a response within 1-2 business days of your submission. We look forward to working with you.In the meantime, please follow <a target="_blank" rel="noopener noreferrer" href="https://instagram.com/adadiamonds">@AdaDiamonds</a>!

Global PopUp Form

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

Return Policy

We expect you to love your Ada jewelry. Should you be unhappy for any reason, return your item within 30 days for a full refund, less any non-refundable deposits or re-stocking fees. Jewelry must be in new, unworn condition and customer is responsible for return shipping. A return shipping label will be provided for a small fee.

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.

Not sure what she wants? We can help. Propose with a classic solitaire, and then design a custom ring together.

Proposal Settings

Floral Basket Solitaire Diamond Engagement Ring featuring Man Made Diamonds (Profile View)

Floral Basket Solitaire featuring Diamonds (Profile View)

See why real couples chose Ada to tell their love story

They Said Yes! 

At Ada Diamonds, we’re different,&nbsp;we’re better, we’re worth it. Book your complimentary consultation now

The Most Trusted Experts in Lab Diamonds

Diamonds set in Pear Petite Pavé Setting (Profile View)

Pear Petite Pavé Diamond Engagement Ring featuring High Quality Lab Diamonds (Profile View)

Ready to Begin Your Concierge Experience?

Engagement Modal Form

Oval and Round Setting

Wedding Band Sitting Flush Against Engagement Ring - Design Number: AD-158

Lab Diamonds Oval Three Stone Setting in White Gold (Main View)

Hand Selected Lab Diamonds set in White Gold Oval Three Stone Setting (Profile View)

White Gold Oval Three Stone Setting featuring Lab Diamonds (Side View)

Lab Diamonds Oval Three Stone Setting in Yellow Gold (Main View)

Lab Diamonds set in Yellow Gold Oval Three Stone Diamond Engagement Ring (Main View)

Lab Diamonds Oval Three Stone Diamond Engagement Ring in Rose Gold (Main View)

Hand Selected Man Made Diamonds set in Rose Gold Oval Three Stone Setting (Main View)

oval three stone setting in 18 karat white gold featuring a pair of oval lab grown diamond side stones ada diamonds design ad-158

14k yellow gold 2.5ct three stone oval engagement ring ada diamonds design ad 158 in box

14k yellow gold 2.5 carat oval cut three stone man made diamond engagement ring ada diamonds design ad158 profile

Yellow Gold Oval Three Stone Diamond Engagement Ring featuring Exceptional Quality 2.75 Carat Diamonds (Main View)

1.75 Carat Synthetic Diamonds Oval Three Stone Setting in Yellow Gold (Profile View)

14k gold 3.5ct three stone oval engagement ring with lab grown diamonds ada diamonds design ad 158 macro

White three stone 1.5 carat oval lab diamond engagement ring ada diamonds design ad-158

platinum oval three stone setting with man made oval diamonds ada diamonds design ad-158

2.5 Carat Lab Grown Diamonds set in Yellow Gold Oval Three Stone Diamond Engagement Ring (Main View)

Platinum oval three stone trellis setting with oval lab made diamonds ada diamonds design ad-158

trellis style three stone oval setting in white gold featuring laboratory grown brilliant ovals ada diamonds design ad-158

oval three stone setting in 14 karat white gold featuring a pair of oval lab grown diamond side stones and 3ct brilliant oval center stone ada diamonds design ad-158

14k yellow gold oval three stone setting featuring man made diamonds ada diamonds design ad-158

14k white gold oval three stone setting featuring lab grown oval diamonds ada diamonds

platinum trellis style oval three stone setting with lab created oval diamonds ada diamonds design ad-158

18k yellow gold oval three stone setting featuring lab grown diamonds

GIA graded lab grown oval diamond set in a 18k yellow gold oval three stone trellis style setting ada diamonds design ad-158

brilliant oval three stone setting in 18 karat yellow gold ada diamonds design

1.5 Carat Lab Grown Diamonds Oval Three Stone Setting in Yellow Gold (Profile View)

Platinum Oval Three Stone Setting featuring 1.0 Carat Lab Diamonds (Profile View)

1.0 ct Diamonds set in Yellow Gold Oval Three Stone Diamond Engagement Ring (Main View)

1.25 carat oval lab created diamond set in a yellow gold oval three stone setting

1.25 Carat Lab Grown Diamonds Oval Three Stone Diamond Engagement Ring in Platinum (Main View)

1.5ct oval lab created diamond set in a platinum oval three stone setting

1.5 carat oval lab created diamond set in a 18 karat yellow gold oval three stone setting

1.5ct oval lab created diamond set in a 14k yellow gold oval three stone setting

yellow gold 2ct oval three stone lab grown diamond engagement ring ada diamonds design ad 158 on model

yellow gold oval three stone lab diamond engagement ring ada diamonds design ad 158 on model

14k gold 3.5 carat oval lab diamond three stone engagement ring ada diamonds design ad 158 on model

oval lab grown diamond set in a yellow gold oval three stone setting with a trellis

High Quality 1.0 Carat Diamonds set in Platinum Oval Three Stone Diamond Engagement Ring (Main View)

1.4ctw Oval Three Stone Engagement Ring in Platinum

1.0 Carat Synthetic Diamonds Oval Three Stone Setting in Platinum (Main View)

1.4ctw Oval Three Stone Engagement Ring in Platinum Profile View

2.0 Carat Lab Diamonds Oval Three Stone Setting in Yellow Gold (Main View)

2.5ctw Oval Three Stone Engagement Ring in 14k Yellow Gold

Your Choice of Gold: 0.20ct Each Side Stones (0.40ctw): $2,650 USD0.30ct Each Side Stones (0.60ctw): $2,900 USD0.40ct Each Side Stones (0.80ctw): $3,450 USD0.50ct Each Side Stones (1.0ctw): $3,750 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. 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. Platinum and two-tone available for an additional $300 fee. This style must be modified to accommodate a mixed-metal setting.

A breathtaking modern setting, featuring a pair of oval lab grown diamond side stones. Available in trellis or basket style.

Oval Three Stone Setting

Three Stone Trellis

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 New York and Austin TX.

Oval Three Stone Setting

The Perfect Match

Ready to Begin Your Concierge Experience?