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Big News: Ada Diamonds Joins the Sasha Primak Family

We are excited to announce that Ada Diamonds has joined Sasha Primak, a luxury jewelry manufacturer based in New York. For years, Sasha Primak has been a trusted partner of Ada Diamonds, crafting many of the exquisite pieces Ada customers wear today.We have the utmost respect for Ada’s founders and are committed to preserving their legacy, values, and the integrity of the Ada brand. Our dedication to exceptional quality, craftsmanship, and innovation remains unchanged.Ada Diamonds' showroom will be relocating to our state-of-the-art 5th Avenue facility, where customers will continue to enjoy the curated luxury experience they love. Visitors will also have the unique opportunity to see master artisans at work, bringing their jewelry dreams to life from start to finish.For any questions regarding past purchases, warranties, or future custom jewelry inquiries, please contact <a href="mailto:concierge@adadiamonds.com">concierge@adadiamonds.com</a>.Stay tuned for more exciting updates as we continue to create exquisite, high-quality jewelry for our valued customers.

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.

Terms &amp; Conditions:<ul><li>Discount applies to select styles only.</li><li>This offer does not apply to custom-designed jewelry or settings.</li><li>A full diamond purchase is required to qualify for the discount; deposits (20%) are excluded.</li><li>Settings are eligible for a discount only with the purchase of a diamond.</li><li>Offer is valid for new purchases only and does not apply to previous transactions.</li><li>This promotion is available for a limited time and may be withdrawn at any time without notice.</li><li>This offer cannot be combined with any other promotions, discounts, or special offers.</li></ul>

Terms &amp; Conditions:<ul><li>Discount applies to select styles only.</li><li>This offer does not apply to custom-designed jewelry or settings.</li><li>Offer is valid for new purchases only and does not apply to previous transactions.</li><li>This promotion is available for a limited time and may be withdrawn at any time without notice.</li><li>This offer cannot be combined with any other promotions, discounts, or special offers.</li></ul>

High Quality Diamonds set in Platinum Asscher Cathedral Solitaire (Main View)

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

Cushion Cathedral Solitaire

Emerald Cathedral Solitaire

Oval Cathedral Solitaire

Pear Cathedral Solitaire

Princess Cathedral Solitaire

Radiant Cathedral Solitaire

Round Cathedral Solitaire

Asscher Cathedral Pavé Setting

Lab Diamonds Asscher Cathedral Solitaire in White Gold (Main View)

White Gold Asscher Cathedral Solitaire Diamond Engagement Ring featuring Lab Diamonds (Profile View)

Lab Diamonds set in White Gold Asscher Cathedral Solitaire (Side View)

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

Lab Diamonds set in Yellow Gold Asscher Cathedral Solitaire Diamond Engagement Ring (Main View)

High Quality Lab Diamonds Asscher Cathedral Solitaire Diamond Engagement Ring in Rose Gold (Main View)

Rose Gold Asscher Cathedral Solitaire featuring Diamonds (Main View)

Lab Created Diamonds Asscher Cathedral Solitaire Diamond Engagement Ring in Platinum & Yellow Gold (Main View)

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

2.0 Carat Lab Grown Diamonds Asscher Cathedral Solitaire in Platinum & Yellow Gold (Main View)

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

Exceptional Quality Lab Diamonds Asscher Cathedral Solitaire in Platinum & Rose Gold (Main View)

High Quality Lab Created Diamonds Asscher Cathedral Solitaire in Platinum & Rose Gold (Profile View)

Platinum & Rose Gold Asscher Cathedral Solitaire Diamond Engagement Ring featuring Lab Diamonds (Main View)

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

Yellow Gold Asscher Cathedral Solitaire featuring Exceptional Quality 3.0 ct Lab Diamonds (Main View)

Yellow Gold Asscher Cathedral Solitaire featuring High Quality 3.0 Carat Diamonds (Side View)

Yellow Gold Asscher Cathedral Solitaire Diamond Engagement Ring featuring 3.0 ctw Diamonds (Profile View)

Asscher Cathedral Solitaire Lab Diamond Engagement Ring Artistic Design AD188

Asscher Cathedral Solitaire Lab Diamond Engagement Ring In Box Design AD188

2ct Asscher Cut Solitaire Lab Diamond Engagement Ring in Platinum Ada Diamonds Design AD-188 Macro

Platinum 2ct Asscher Cut Solitaire Lab Diamond Engagement Ring in Platinum Ada Diamonds Design AD-188 Profile

Rose Gold Asscher Cathedral Solitaire Diamond Engagement Ring featuring 2.75 Carat Man Made Diamonds (Main View)

cathedral solitaire with asscher cut lab diamond and shared prong wedding band

asscher cut lab diamond in platinum solitaire

Lab Diamond Asscher Cathedral Solitaire In Box AD188

Platinum Asscher Cathedral Solitaire featuring 2.25 Carat Lab Diamonds (Main View)

2.0 Carat Lab Diamonds Asscher Cathedral Solitaire in White Gold (Main View)

18k White Gold 2ct Asscher Lab Diamond Cathedral Solitaire Engagement Ring Ada Diamonds Design AD-188 on Model

Platinum 2.5 Carat Asscher Cathedral Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-188 on Model

Rose Gold 2.75ct Asscher Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-188 on Model

yellow gold 3 carat asscher cut cathedral lab diamond solitaire engagement ring ada diamonds design ad 188

Platinum Asscher Cathedral Solitaire Diamond Engagement Ring featuring Hand Selected 4.0 Carat Lab Diamonds (Main View)

4ct Asscher Cut Cathedral Solitaire Engagement Ring in Platinum

Platinum Asscher Cathedral Solitaire Diamond Engagement Ring featuring High Quality 4.0 ctw Lab Diamonds (Main View)

4ct Asscher Cathedral Solitaire Engagement Ring in Platinum Profile View

3.0 ct Lab Diamonds set in Yellow Gold Asscher Cathedral Solitaire Diamond Engagement Ring (Main View)

3ct Asscher Cathedral Solitaire Engagement Ring in 18k 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.

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

Asscher 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.