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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.

Emerald Cathedral Solitaire - Ada Diamonds

Platinum Emerald Cathedral Solitaire featuring Man Made 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 Cathedral Solitaire

Cushion Cathedral Solitaire

Oval Cathedral Solitaire

Pear Cathedral Solitaire

Princess Cathedral Solitaire

Radiant Cathedral Solitaire

Round Cathedral Solitaire

Emerald Cathedral Pavé Setting

Diamonds set in White Gold Emerald Cathedral Solitaire (Main View)

White Gold Emerald Cathedral Solitaire featuring Diamonds (Profile View)

High Quality Lab Diamonds set in White Gold Emerald Cathedral Solitaire (Profile View)

Lab Diamonds set in White Gold Emerald Cathedral Solitaire Diamond Engagement Ring (Side View)

White Gold Emerald Cathedral Solitaire featuring Diamonds (Side View)

Yellow Gold Emerald Cathedral Solitaire featuring Hand Selected Lab Diamonds (Main View)

Lab Created Diamonds Emerald Cathedral Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

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

Rose Gold Emerald Cathedral Solitaire featuring Diamonds (Main View)

Hand Selected Lab Created Diamonds Emerald Cathedral Solitaire in Platinum & Yellow Gold (Main View)

Platinum & Yellow Gold Emerald Cathedral Solitaire Diamond Engagement Ring featuring Lab Diamonds (Profile View)

Platinum & Yellow Gold Emerald Cathedral Solitaire featuring Lab Diamonds (Profile View)

Man Made Diamonds Emerald Cathedral Solitaire Diamond Engagement Ring in Platinum & Rose Gold (Main View)

Platinum & Rose Gold Emerald Cathedral Solitaire featuring Lab Diamonds (Profile View)

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

High Quality Man Made Diamonds set in Platinum & Rose Gold Emerald Cathedral Solitaire (Profile View)

18kt White Gold Emerald Cathedral Solitaire Diamond Engagement Ring featuring 2.75 Carat Lab Diamonds (Main View)

White Gold Emerald Cathedral Solitaire Diamond Engagement Ring featuring High Quality 2.75 ct Lab Diamonds (Profile View)

Platinum Emerald Cathedral Solitaire featuring 2.0 ct Lab Diamonds (Main View)

Platinum 2.5 Carat Emerald Cut Cathedral Solitaire Engagement Ring Featuring Lab Diamonds Ada Diamonds Design Number 086 Artistic Shot in Box

1.75 Carat Emerald Cut Cathedral Solitaire Engagement Ring in Platinum Featuring Lab Diamonds Ada Diamonds Design Number 086 Profile View

5.0 ct Created Diamonds set in Platinum Emerald Cathedral Solitaire Diamond Engagement Ring (Main View)

5.0 ct Diamonds Emerald Cathedral Solitaire Diamond Engagement Ring in Platinum (Main View)

Platinum Emerald Cathedral Solitaire Diamond Engagement Ring featuring 5.0 ctw Lab Diamonds (Main View)

Exceptional Quality 3.75 Carat Synthetic Diamonds Emerald Cathedral Solitaire in Yellow Gold (Main View)

Platinum & Yellow Gold Emerald Cathedral Solitaire Diamond Engagement Ring featuring 1.75 ct Synthetic Diamonds (Profile View)

Hand Selected 3.75 ct Diamonds set in Yellow Gold Emerald Cathedral Solitaire (Profile View)

18k Yellow Gold 2.75 Carat Emerald Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-068 In Box

18k Yellow Gold 2.75 Carat Emerald Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-068 Profile

1.75 ct Diamonds Emerald Cathedral Solitaire in Yellow Gold (Main View)

1.75 ct Synthetic Diamonds Emerald Cathedral Solitaire in Yellow Gold (Profile View)

yellow gold 3 carat emerald cut lab grown diamond cathedral solitaire engagement ring ada diamonds design ad 068

3.0 Carat Lab Created Diamonds Emerald Cathedral Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

3.0 Carat Diamonds Emerald Cathedral Solitaire in Yellow Gold (Main View)

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

Yellow Gold Emerald Cathedral Solitaire Diamond Engagement Ring featuring Hand Selected 2.0 ctw Lab Created Diamonds (Side View)

14k Yellow Gold 2.5 Carat Emerald Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design Number AD-068 Profile View

1.75 Carat Diamonds Emerald Cathedral Solitaire Diamond Engagement Ring in Platinum (Main View)

2.25 ctw Lab Diamonds Emerald Cathedral Solitaire in White Gold (Main View)

14k Rose Gold Cathedral Solitaire Engagement Ring with 1.5 Carat Emerald Cut Lab Created Diamond Ada Diamonds Design Number AD-068 Artistic Image in White Box

Rose Gold Emerald Cathedral Solitaire featuring 1.5 Carat Lab Diamonds (Main View)

Yellow Gold 1.25 Carat Lab Created Diamond Emerald Cut Cathedral Solitaire On Model Design AD068

1.5 ct Diamonds Emerald Cathedral Solitaire Diamond Engagement Ring in Platinum (Main View)

Exceptional Quality 1.75 ct Diamonds Emerald Cathedral Solitaire Diamond Engagement Ring in Platinum (Main View)

Platinum & 14k Yellow Gold Emerald Cathedral Solitaire Diamond Engagement Ring featuring 1.75 Carat Diamonds (Main View)

1.75 Carat Diamonds Emerald Cathedral Solitaire in Platinum (Main View)

2 ct emerald cut cathedral solitaire engagement ring in 14k yellow gold ada diamonds design ad 068 on hand

2.25 Carat White Gold Emerald Cut Lab Diamond Cathedral Solitaire Wedding Ring On Model Ada Diamonds Design AD068

Platinum 2.5 Carat Emerald Cut Cathedral Solitaire Lab Diamond Engagement Ring On Model Ada Diamonds Design AD068

18k Yellow Gold 2.75ct Emerald Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-068 on Model

2.75 ct Lab Diamonds set in White Gold Emerald Cathedral Solitaire

14k yellow gold 3 carat emerald cut lab created diamond solitaire engagement ring ada diamonds design 068 on model

3ct emerald cut lab diamond in cathedral solitaire setting

Platinum 3.5ct Emerald Cut Lab Diamond Cathedral Solitaire Engagement Ring Ada Diamonds Design AD-068 on Model

High Quality 3.75 ctw Lab Grown Diamonds set in 14k Yellow Gold Emerald Cathedral Solitaire (Main View)

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

High Quality 5.0 ct Lab Grown Diamonds Emerald Cathedral Solitaire in Platinum (Profile View)

18k Yellow Gold 2.75ct Emerald Cut Lab Created Diamond Cathedral Solitaire Ada Diamonds Design AD-068 Profile on Model

Exceptional Quality 5.0 ctw Created Diamonds Emerald Cathedral Solitaire in Platinum (Main View)

Platinum Emerald Cathedral Solitaire featuring 5.0 ctw Diamonds (Main View)

Exceptional Quality 5.0 Carat Lab Created Diamonds Emerald Cathedral Solitaire in Platinum (Main View)

1.75ct Emerald Cathedral Solitaire Engagement Ring in Platinum

1.75 ctw Diamonds Emerald Cathedral Solitaire in Platinum (Profile View)

1.75ct Emerald Cathedral Solitaire Engagement Ring in Platinum Profile View

2.0 ct Lab Diamonds Emerald Cathedral Solitaire in Yellow Gold (Main View)

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

Rose Gold Emerald Cathedral Solitaire Diamond Engagement Ring featuring 1.5 Carat Diamonds (Main View)

1.5ct Emerald Cathedral Solitaire Engagement Ring in 14k Rose 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. 

Emerald 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.