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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.

2.75 ctw Lab Grown Diamonds set in Yellow Gold Oval Cathedral Solitaire (Main View)

Exceptional Quality Diamonds set in Oval Cathedral Solitaire

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

Asscher Cathedral Solitaire

Cushion Cathedral Solitaire

Emerald Cathedral Solitaire

Pear Cathedral Solitaire

Princess Cathedral Solitaire

Radiant Cathedral Solitaire

Round Cathedral Solitaire

Oval Cathedral Pavé Setting

Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in White Gold (Main View)

Diamonds Oval Cathedral Solitaire in White Gold (Profile View)

White Gold Oval Cathedral Solitaire featuring Lab Diamonds (Side View)

Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring High Quality Diamonds (Main View)

Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring Hand Selected Lab Diamonds (Main View)

Diamonds Oval Cathedral Solitaire in Rose Gold (Main View)

Rose Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring Diamonds (Main View)

Platinum & Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring High Quality Diamonds (Main View)

Lab Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in Platinum & Yellow Gold (Profile View)

High Quality 2.0 Carat Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in Platinum & Yellow Gold (Main View)

Lab Created Diamonds set in Platinum & Yellow Gold Oval Cathedral Solitaire (Profile View)

Diamonds set in Platinum & Rose Gold Oval Cathedral Solitaire Diamond Engagement Ring (Main View)

Platinum & Rose Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring Diamonds (Profile View)

Platinum & Rose Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring Man Made Diamonds (Profile View)

Platinum Oval Cathedral Solitaire Diamond Engagement Ring featuring 3.0 Carat Created Diamonds (Main View)

3.0 Carat Lab Diamonds set in Platinum Oval Cathedral Solitaire Diamond Engagement Ring (Side View)

Platinum Oval Cathedral Solitaire featuring 2.0 Carat Lab Diamonds (Main View)

1.5 ct Lab Created Diamonds set in Platinum Oval Cathedral Solitaire Diamond Engagement Ring (Main View)

1.5 ct Lab Created Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in Platinum (Profile View)

1.5 ct Diamonds set in Platinum Oval Cathedral Solitaire (Side View)

3.5 ct Lab Grown Diamonds set in White Gold Oval Cathedral Solitaire (Main View)

Exceptional Quality 3.5 Carat Lab Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in White Gold (Side View)

yellow gold 3 carat oval solitaire high profile engagement ring ada diamonds design ad 326 macro

Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring 2.75 Carat Lab Diamonds (Main View)

2.75 ctw Diamonds set in 14kt Yellow Gold Oval Cathedral Solitaire (Profile View)

Hand Selected 4.5 Carat Created Diamonds set in Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring (Main View)

4.5 Carat Diamonds set in Yellow Gold Oval Cathedral Solitaire (Profile View)

2.0 Carat Man Made Diamonds set in Yellow Gold Oval Cathedral Solitaire (Main View)

Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring 2.0 Carat Diamonds (Profile View)

Platinum & Yellow Gold Oval Cathedral Solitaire featuring 3.75 ct Diamonds (Main View)

Platinum & Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring Exceptional Quality 3.75 Carat Man Made Diamonds (Profile View)

18k Yellow Gold Oval Cathedral Solitaire featuring 2.0 Carat Diamonds (Main View)

White Gold 2 Carat Oval Cathedral Solitaire with Lab Diamond Ada Diamonds Design AD-326 Profile

Platinum 2.5 Carat Oval Lab Diamond Cathedral Solitaire Engagement Ring Ada Diamonds Design AD-326 Profile

1.5 Carat Diamonds set in Platinum & 14k Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring

18k White Gold 2ct Oval Lab Diamond Cathedral Solitaire Ada Diamonds Design AD-326 Artistic

Two Tone White & Yellow Gold 3 Carat Oval Cathedral Lab Created Diamond Solitaire Ring Ada Diamonds Design AD-326 Artistic

18k White and Yellow Gold Two Tone 2ct Oval Solitaire Lab Diamond Ring Ada Diamonds Design AD-326 Profile

platinum and yellow gold two tone 4 ct oval cathedral man made diamond solitaire engagement ring ada diamonds design ad 326 macro

18k Yellow Gold 1.5ct Oval Solitaire Lab Diamond Ring Ada Diamonds Design AD-326 Profile View

14k Yellow Gold 1.5ct Oval Lab Grown Diamond Cathedral Solitaire Ada Diamonds Design AD-326 Macro

Platinum 3ct Oval Cut Lab Created Diamond Cathedral Solitaire Ada Diamonds Design AD-326 Macro

Exceptional Quality 2.0 Carat Synthetic Diamonds set in Platinum & 18kt Yellow Gold Oval Cathedral Solitaire (Side View)

Platinum 1.75ct Oval Cathedral Solitaire with Lab Diamond Ada Diamonds Design AD-326 Macro

Platinum 2.5ct Oval Cut Lab Diamond Cathedral Solitaire Engagement Ring Ada Diamonds Design AD-326 Profile in Box

Rose Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring 2.25 Carat Diamonds (Side View)

2.25 Carat Lab Diamonds Oval Cathedral Solitaire in Rose Gold (Profile View)

2.0 ctw Lab Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring featuring Hand Selected 2.0 Carat Diamonds (Main View)

4.0 ct Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in Platinum & Yellow Gold (Main View)

Yellow Gold Oval Cathedral Solitaire featuring High Quality 1.75 Carat Lab Diamonds (Main View)

14k yellow gold man made diamond wedding set with 3 ct oval solitaire engagement ring and eternity band ada diamonds design ad 326 and 082 macro

White Gold 1.25ct Oval Cathedral Lab Created Diamond Solitaire Ada Diamonds Design AD-326 on Model

Yellow Gold 1.5ct Oval Cathedral Lab Diamond Solitaire Ada Diamonds Design AD-326 on Model

Platinum 1.75 Carat Oval Cut Lab Grown Diamond Solitaire Engagement Ring Ada Diamonds Design AD-326 on Hand

14k yellow gold 1.75 Carat Oval Cut Lab Grown Diamond Solitaire Engagement Ring Ada Diamonds Design AD-326 on Hand

Exceptional Quality 2.0 Carat Diamonds set in Yellow Gold Oval Cathedral Solitaire ()

Hand Selected 2.0 ct Lab Diamonds set in Yellow Gold Oval Cathedral Solitaire (Main View)

Platinum 2.25ct Oval Synthetic Diamond Lab Created Diamond Solitaire Engagement Ring Ada Diamonds Design AD-326 On Hand

Platinum 2.5 Carat Oval Lab Diamond Engagement Ring Ada Diamonds Design AD-326 on Model

Exceptional Quality 2.75 Carat Created Diamonds set in Yellow Gold Oval Cathedral Solitaire ()

14k yellow gold oval cathedral lab diamond solitaire engagement ring and u pave eternity band ada diamonds design ad 326 and ad082

Hand Selected 3.0 Carat Diamonds set in Platinum Oval Cathedral Solitaire (Main View)

platinum 3.5ct oval cathedral solitaire engagement ring wiht hidden halo ada diamonds design ad 326 on model

platinum and yellow gold two-tone four carat oval cathedral high profile lab diamond engagement ring ada diamonds design ad 326 on hand

4.0 Carat Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in Platinum & Yellow Gold (Main View)

4.5 ct Created Diamonds Oval Cathedral Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

14k yellow gold oval cathedral lab diamond solitaire engagement rin ada diamonds design ad 326 on model profile

Platinum Oval Cathedral Solitaire featuring High Quality 1.5 ctw Lab Diamonds (Profile View)

14k yellow gold and platinum 4ct oval cathedral solitaire lab diamond engagement ring with hidden halo profile view on model

4.5 ctw Diamonds Oval Cathedral Solitaire in Yellow Gold (Profile View)

2.0 Carat Lab Created Diamonds set in Platinum Oval Cathedral Solitaire Diamond Engagement Ring (Main View)

3.5 Carat Lab Diamonds set in White Gold Oval Cathedral Solitaire Diamond Engagement Ring (Main View)

3.5ctw Oval Cathedral Solitaire Engagement Ring in 18k White Gold

Platinum Oval Cathedral Solitaire Diamond Engagement Ring featuring Hand Selected 3.5 ct Man Made Diamonds (Profile View)

3.5ctw Oval Cathedral Solitaire Engagement Ring in 18k White Gold Profile View

2.0 Carat Lab Diamonds set in Yellow Gold Oval Cathedral Solitaire Diamond Engagement Ring (Profile View)

2ct Oval Cathedral Solitaire Engagement Ring in 18k Yellow Gold

Rose Gold Oval Cathedral Solitaire featuring 2.5 ct Lab Diamonds

"Stunning 2.5 ct Oval Cathedral Solitaire Diamond Engagement Ring in 14k Rose Gold Unveiling - AD-326"

Your Choice of Gold: $1,350 USD Platinum &amp; Two-Tone: $1,600 USD Pricing is for setting only - center stone priced separately. Add a hidden halo for $500 USD.

Elegant and simple, this solitaire setting features raised cathedral shoulders. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm. 

Oval Cathedral Solitaire

Cathedral 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 New York and Austin TX.