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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.

Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring featuring 2.0 ct Created Diamonds (Side View)

Hand Selected 2.0 Carat Lab Grown Diamonds set in White Gold Radiant Cathedral Solitaire Diamond Engagement Ring (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 Cathedral Solitaire

Cushion Cathedral Solitaire

Emerald Cathedral Solitaire

Oval Cathedral Solitaire

Pear Cathedral Solitaire

Princess Cathedral Solitaire

Round Cathedral Solitaire

Radiant Cathedral Pavé Setting

Exceptional Quality Lab Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in White Gold (Main View)

Lab Diamonds set in White Gold Radiant Cathedral Solitaire Diamond Engagement Ring (Profile View)

Hand Selected Man Made Diamonds Radiant Cathedral Solitaire in White Gold (Profile View)

Diamonds Radiant Cathedral Solitaire in White Gold (Side View)

Diamonds set in White Gold Radiant Cathedral Solitaire (Side View)

Hand Selected Diamonds set in Yellow Gold Radiant Cathedral Solitaire (Main View)

Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring featuring Lab Diamonds (Main View)

Rose Gold Radiant Cathedral Solitaire Diamond Engagement Ring featuring Lab Grown Diamonds (Main View)

Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in Rose Gold (Main View)

Platinum & Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring featuring Man Made Diamonds (Main View)

Diamonds set in Platinum & Yellow Gold Radiant Cathedral Solitaire (Profile View)

High Quality Lab Created Diamonds set in Platinum & Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring (Profile View)

High Quality Lab Created Diamonds set in Platinum & Rose Gold Radiant Cathedral Solitaire (Main View)

Platinum & Rose Gold Radiant Cathedral Solitaire featuring High Quality Diamonds (Profile View)

Lab Diamonds Radiant Cathedral Solitaire in Platinum & Rose Gold (Main View)

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

1.75ct radiant cut lab diamond in cathedral solitaire engagement ring in 18k white gold

1.75 ct Diamonds Radiant Cathedral Solitaire in White Gold (Profile View)

1.75 Carat Lab Diamonds Radiant Cathedral Solitaire in White Gold (Profile View)

Platinum Radiant Cathedral Solitaire Diamond Engagement Ring featuring 2.0 Carat Lab Diamonds (Main View)

2.0 Carat Lab Diamonds Radiant Cathedral Solitaire in Platinum (Side View)

14k yellow gold 2.75ct radiant cut lab diamond solitaire engagement ring with hidden halo ada diamonds design ad 331 macro

14k yellow gold 2.75 carat radiant cut lab grown diamond cathedral raised solitaire engagement ring ada diamonds design ad 331 profile

2.75 ct Diamonds set in Yellow Gold Radiant Cathedral Solitaire (Profile View)

2.0 ctw Diamonds set in 14k Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring (Main View)

14k Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring featuring Hand Selected 2.0 ct Lab Diamonds (Profile View)

2.75 Carat Lab Diamonds Radiant Cathedral Solitaire in Yellow Gold (Main View)

Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring featuring 2.75 Carat Lab Created Diamonds (Profile View)

5 carat radiant cut lab created diamond engagement ring in two tone platinum and yellow gold ada diamonds design ad331 macro

1.25 Carat Lab Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in 14k Yellow Gold (Main View)

1.25 Carat Lab Diamonds set in 14k Yellow Gold Radiant Cathedral Solitaire Diamond Engagement Ring

3.75 ct Diamonds set in Platinum Radiant Cathedral Solitaire (Main View)

High Quality 3.75 ctw Lab Diamonds Radiant Cathedral Solitaire in Platinum (Side View)

3.75 Carat Diamonds set in Platinum Radiant Cathedral Solitaire Diamond Engagement Ring (Main View)

1.25 ct Lab Created Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in 14k Yellow Gold (Main View)

High Quality 1.75 ctw Diamonds set in 18k White Gold Radiant Cathedral Solitaire Diamond Engagement Ring (Main View)

14k Yellow Gold Radiant Cathedral Solitaire featuring 2.0 ctw Lab Grown Diamonds (Main View)

2.75 ctw Diamonds Radiant Cathedral Solitaire in Yellow Gold (Main View)

3.75 ctw Lab Diamonds Radiant Cathedral Solitaire in Platinum (Main View)

two-tone yellow gold and platinum 5 ct radiant cut lab diamond engagement ring ada diamonds design ad 331 on model

High Quality 2.75 ct Synthetic Diamonds Radiant Cathedral Solitaire in Yellow Gold (Profile View)

1.75 ct Diamonds Radiant Cathedral Solitaire in White Gold (Main View)

1.75ct Radiant Cathedral Solitaire Engagement Ring in 18k White Gold

1.75 Carat Lab Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in White Gold (Main View)

2.0 ct Created Diamonds Radiant Cathedral Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

2ct Radiant Cathedral Solitaire Engagement Ring in 14k Yellow Gold

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

Radiant 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 San Francisco, New York, and Austin TX.