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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.

3ct cushion cut lab diamond in platinum solitaire

Platinum Cushion Trellis Solitaire Diamond Engagement Ring featuring 3.0 ct Lab Diamonds (Profile 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 Trellis Solitaire

Emerald Trellis Solitaire

Oval Trellis Solitaire

Round Trellis Solitaire

Princess Trellis Solitaire

Radiant Trellis Solitaire

Lab Diamonds Cushion Trellis Solitaire in White Gold (Main View)

White Gold Cushion Trellis Solitaire featuring Diamonds (Main View)

White Gold Cushion Trellis Solitaire featuring Diamonds (Profile View)

Man Made Diamonds set in White Gold Cushion Trellis Solitaire Diamond Engagement Ring (Profile View)

White Gold Cushion Trellis Solitaire Diamond Engagement Ring featuring Man Made Diamonds (Side View)

White Gold Cushion Trellis Solitaire featuring Diamonds (Side View)

Diamonds Cushion Trellis Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

Man Made Diamonds Cushion Trellis Solitaire Diamond Engagement Ring in Yellow Gold (Main View)

Exceptional Quality Lab Diamonds set in Yellow Gold Cushion Trellis Solitaire (Main View)

Exceptional Quality Diamonds Cushion Trellis Solitaire in Yellow Gold (Main View)

Rose Gold Cushion Trellis Solitaire Diamond Engagement Ring featuring Diamonds (Main View)

Rose Gold Cushion Trellis Solitaire Diamond Engagement Ring featuring Man Made Diamonds (Main View)

Lab Diamonds set in Rose Gold Cushion Trellis Solitaire Diamond Engagement Ring (Main View)

Diamonds set in Rose Gold Cushion Trellis Solitaire Diamond Engagement Ring (Main View)

platinum 2 carat cushion cut lab diamond solitaire with hidden halo engagement ring ada diamonds design ad 336

platinum 2 carat cushion cut lab diamond solitaire engagement ring ada diamonds design ad 336

Platinum Cushion Trellis Solitaire Diamond Engagement Ring featuring High Quality 2.0 ctw Man Made Diamonds (Main View)

Platinum Cushion Trellis Solitaire featuring 2.0 ct Lab Grown Diamonds

Platinum & Yellow Gold Cushion Trellis Solitaire featuring 3.75 Carat Lab Diamonds (Profile View)

Cushion Trellis Solitaire featuring Lab Grown Diamonds (Profile View)

Hand Selected 3.0 ct Diamonds set in Platinum Cushion Trellis Solitaire Diamond Engagement Ring (Profile View)

Yellow Gold Cushion Trellis Solitaire featuring Diamonds

Platinum 1ct Cushion Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-336 Macro

Platinum 1 Carat Cushion Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-336 Profile

1.75ct Square Cushion Cut Lab Grown Diamond in Yellow Gold Ada Diamonds Design AD-336 Macro

14k Yellow Gold 1.5ct Cushion Lab Created Diamond Trellis Solitaire Ada Diamonds Design AD-336 Artistic

Platinum 1ct Cushion Lab Diamond Solitaire Ada Diamonds Design AD-336 on Model

Platinum Cushion Trellis Solitaire Diamond Engagement Ring featuring High Quality 1.5 ct Lab Diamonds (Main View)

18k Yellow Gold 2 Carat Cushion Cut Lab Diamond Solitaire Engagement Ring Ada Diamonds Design AD-336 on Model

platinum two carat cushion cut lab grown diamond trellis solitaire ada diamonds design ad 336

2 ct square cushion cut lab diamond trellis solitaire engagement ring ada diamonds design ad 336

3ct cushion cut lab diamond in trellis solitaire

Yellow Gold 1.75ct Cushion Cut Lab Diamond Solitaire Ring Ada Diamonds Design AD-336 Profile on Hand

Platinum Cushion Trellis Solitaire featuring 3.0 Carat Synthetic Diamonds

"Unveiling the 3.0 ct Platinum Cushion Trellis Solitaire Diamond Engagement Ring | Product Highlight AD-336"

Cushion Trellis Solitaire featuring Created Diamonds

"Stunning 3.0ct Cushion Trellis Solitaire Engagement Ring in Platinum | Created Diamonds Showcase"

Platinum & Yellow Gold Cushion Trellis Solitaire Diamond Engagement Ring featuring Exceptional Quality Lab Grown Diamonds

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

Romantic and elegant, this setting features petite prongs and a trellis basket. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm.

Cushion Trellis Solitaire

Trellis 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.