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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

Asscher Single Halo Setting

Cushion Single Halo Setting

Emerald Single Halo Setting

Oval Single Halo Setting

Pear Single Halo Setting

Radiant Single Halo Setting

Round Single Halo Setting

Halo-000

Halo-001

Halo-002

Halo-003

Halo-004

Halo-005

Halo-006

Wedding Band Sitting Flush Against Engagement Ring - Design Number: AD-440

Hand Selected Lab Diamonds set in White Gold Princess Single Halo Diamond Engagement Ring (Main View)

White Gold Princess Single Halo Setting featuring Lab Grown Diamonds (Main View)

White Gold Princess Single Halo Diamond Engagement Ring featuring Lab Diamonds (Profile View)

Lab Diamonds Princess Single Halo Diamond Engagement Ring in White Gold (Profile View)

Lab Diamonds set in White Gold Princess Single Halo Setting (Side View)

Diamonds Princess Single Halo Setting in White Gold (Side View)

Diamonds Princess Single Halo Diamond Engagement Ring in Yellow Gold (Main View)

Diamonds set in Yellow Gold Princess Single Halo Diamond Engagement Ring (Main View)

Diamonds set in Rose Gold Princess Single Halo Diamond Engagement Ring (Main View)

Rose Gold Princess Single Halo Setting featuring Diamonds (Main View)

Platinum & Yellow Gold Princess Single Halo Setting featuring High Quality Lab Created Diamonds (Main View)

Exceptional Quality Diamonds Princess Single Halo Setting in Platinum & Yellow Gold (Profile View)

2.0 ct Lab Created Diamonds set in Platinum & Yellow Gold Princess Single Halo Diamond Engagement Ring (Main View)

Platinum & Yellow Gold Princess Single Halo Setting featuring Exceptional Quality Lab Diamonds (Profile View)

Platinum & Rose Gold Princess Single Halo Diamond Engagement Ring featuring Man Made Diamonds (Main View)

Diamonds Princess Single Halo Setting in Platinum & Rose Gold (Profile View)

High Quality Man Made Diamonds set in Platinum & Rose Gold Princess Single Halo Setting (Main View)

Hand Selected Lab Created Diamonds set in Platinum & Rose Gold Princess Single Halo Setting (Profile View)

Your Choice of Gold: 1.1mm Halo Stones (0.12ctw): $2,250 USD 1.2mm Halo Stones (0.15ctw): $2,300 USD 1.3mm Halo Stones (0.20ctw): $2,350 USD 1.5mm Halo Stones (0.30ctw): $2,450 USD 2.0mm Halo Stones (0.45ctw): $2,650 USD 2.4mm Halo Stones (0.60ctw): $2,950 USD   Starting at price is for the setting only (center stone priced separately) and includes DEF/VS lab grown diamonds. Platinum &amp; two-tone available for an additional $300 fee. Total carat weights are approximate.

Simple yet beautiful, this setting features a single halo of lab diamonds. Customize your ring with band widths from 1.8-2.5mm.

Single Halo

Princess Single Halo Setting

Custom made-to-order princess halo 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.

Princess Single Halo Setting

The Perfect Match

Ready to Begin Your Concierge Experience?