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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.

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>.

<p style="--tw-backdrop-blur:;--tw-backdrop-brightness:;--tw-backdrop-contrast:;--tw-backdrop-grayscale:;--tw-backdrop-hue-rotate:;--tw-backdrop-invert:;--tw-backdrop-opacity:;--tw-backdrop-saturate:;--tw-backdrop-sepia:;--tw-blur:;--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-brightness:;--tw-contrast:;--tw-drop-shadow:;--tw-gradient-from-position:;--tw-gradient-to-position:;--tw-gradient-via-position:;--tw-grayscale:;--tw-hue-rotate:;--tw-invert:;--tw-numeric-figure:;--tw-numeric-fraction:;--tw-numeric-spacing:;--tw-ordinal:;--tw-pan-x:;--tw-pan-y:;--tw-pinch-zoom:;--tw-ring-color:rgba(59,130,246,.5);--tw-ring-inset:;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-ring-offset-width:0px;--tw-ring-shadow:0 0 #0000;--tw-rotate:0;--tw-saturate:;--tw-scale-x:1;--tw-scale-y:1;--tw-scroll-snap-strictness:proximity;--tw-sepia:;--tw-shadow-colored:0 0 #0000;--tw-shadow:0 0 #0000;--tw-skew-x:0;--tw-skew-y:0;--tw-slashed-zero:;--tw-translate-x:0;--tw-translate-y:0;-webkit-text-stroke-width:0px;background-color:rgb(255, 255, 255);border:0px solid rgb(229, 231, 235);box-sizing:border-box;color:rgb(41, 41, 41);font-family:__vito_823815, __vito_Fallback_823815, sans-serif;font-size:medium;font-style:normal;font-variant-caps:normal;font-variant-ligatures:normal;font-weight:400;letter-spacing:normal;margin-bottom:0px;margin-right:0px;margin-top:0px;orphans:2;text-align:start;text-decoration-color:initial;text-decoration-style:initial;text-decoration-thickness:initial;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;">We proudly cast and hand-set our engagement rings in the USA to our clients' exact specifications. Our knowledgeable, yet approachable Diamond Concierge Team are happy to discuss all the options below, along with any other customizations you may seek, upon receipt of your inquiry.&nbsp;<p style="--tw-backdrop-blur:;--tw-backdrop-brightness:;--tw-backdrop-contrast:;--tw-backdrop-grayscale:;--tw-backdrop-hue-rotate:;--tw-backdrop-invert:;--tw-backdrop-opacity:;--tw-backdrop-saturate:;--tw-backdrop-sepia:;--tw-blur:;--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-brightness:;--tw-contrast:;--tw-drop-shadow:;--tw-gradient-from-position:;--tw-gradient-to-position:;--tw-gradient-via-position:;--tw-grayscale:;--tw-hue-rotate:;--tw-invert:;--tw-numeric-figure:;--tw-numeric-fraction:;--tw-numeric-spacing:;--tw-ordinal:;--tw-pan-x:;--tw-pan-y:;--tw-pinch-zoom:;--tw-ring-color:rgba(59,130,246,.5);--tw-ring-inset:;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-ring-offset-width:0px;--tw-ring-shadow:0 0 #0000;--tw-rotate:0;--tw-saturate:;--tw-scale-x:1;--tw-scale-y:1;--tw-scroll-snap-strictness:proximity;--tw-sepia:;--tw-shadow-colored:0 0 #0000;--tw-shadow:0 0 #0000;--tw-skew-x:0;--tw-skew-y:0;--tw-slashed-zero:;--tw-translate-x:0;--tw-translate-y:0;-webkit-text-stroke-width:0px;background-color:rgb(255, 255, 255);border:0px solid rgb(229, 231, 235);box-sizing:border-box;color:rgb(41, 41, 41);font-family:__vito_823815, __vito_Fallback_823815, sans-serif;font-size:medium;font-style:normal;font-variant-caps:normal;font-variant-ligatures:normal;font-weight:400;letter-spacing:normal;margin-bottom:0px;margin-right:0px;margin-top:0px;orphans:2;text-align:start;text-decoration-color:initial;text-decoration-style:initial;text-decoration-thickness:initial;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;">Not sure exactly what you or your partner wants? No problem! Please feel free to inquire and we're happy to guide you through the process. <a style="--tw-backdrop-blur:;--tw-backdrop-brightness:;--tw-backdrop-contrast:;--tw-backdrop-grayscale:;--tw-backdrop-hue-rotate:;--tw-backdrop-invert:;--tw-backdrop-opacity:;--tw-backdrop-saturate:;--tw-backdrop-sepia:;--tw-blur:;--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-brightness:;--tw-contrast:;--tw-drop-shadow:;--tw-gradient-from-position:;--tw-gradient-to-position:;--tw-gradient-via-position:;--tw-grayscale:;--tw-hue-rotate:;--tw-invert:;--tw-numeric-figure:;--tw-numeric-fraction:;--tw-numeric-spacing:;--tw-ordinal:;--tw-pan-x:;--tw-pan-y:;--tw-pinch-zoom:;--tw-ring-color:rgba(59,130,246,.5);--tw-ring-inset:;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-ring-offset-width:0px;--tw-ring-shadow:0 0 #0000;--tw-rotate:0;--tw-saturate:;--tw-scale-x:1;--tw-scale-y:1;--tw-scroll-snap-strictness:proximity;--tw-sepia:;--tw-shadow-colored:0 0 #0000;--tw-shadow:0 0 #0000;--tw-skew-x:0;--tw-skew-y:0;--tw-slashed-zero:;--tw-translate-x:0;--tw-translate-y:0;border:0px solid rgb(229, 231, 235);box-sizing:border-box;color:inherit;text-decoration-color:inherit;text-decoration-line:underline;text-decoration-style:inherit;text-decoration-thickness:inherit;" href="/diamond-concierge-process">Learn more</a> about our engagement ring purchasing experience.

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.

Radiant and Trapezoid Setting - Ada Diamonds

Read Our <a href="/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 and Trapezoid Setting

Cushion and Trapezoid Setting

Emerald and Trapezoid Setting

Oval and Trapezoid Setting

Princess and Trapezoid Setting

Radiant and Half Moon Setting

Synthetic Diamonds Radiant and Trapezoid Setting in White Gold (Main View)

Lab Grown Diamonds set in White Gold Radiant and Trapezoid Diamond Engagement Ring (Profile View)

High Quality Lab Grown Diamonds set in White Gold Radiant and Trapezoid Setting (Side View)

Yellow Gold Radiant and Trapezoid Setting featuring Diamonds (Main View)

Lab Created Diamonds set in Yellow Gold Radiant and Trapezoid Diamond Engagement Ring (Main View)

Diamonds Radiant and Trapezoid Diamond Engagement Ring in Rose Gold (Main View)

Lab Grown Diamonds Radiant and Trapezoid Diamond Engagement Ring in Rose Gold (Main View)

High Quality Diamonds Radiant and Trapezoid Diamond Engagement Ring in Platinum & Yellow Gold (Main View)

Platinum & Yellow Gold Radiant and Trapezoid Setting featuring Lab Created Diamonds (Profile View)

Diamonds set in Platinum & Yellow Gold Radiant and Trapezoid Setting (Profile View)

Created Diamonds set in Platinum & Rose Gold Radiant and Trapezoid Setting (Main View)

Platinum & Rose Gold Radiant and Trapezoid Diamond Engagement Ring featuring Diamonds (Profile View)

Lab Diamonds Radiant and Trapezoid Diamond Engagement Ring in Platinum & Rose Gold (Main View)

Hand Selected Lab Diamonds set in Platinum & Rose Gold Radiant and Trapezoid Diamond Engagement Ring (Profile View)

18k white gold 4.5 carat three stone engagement ring with radiant and trapezoid lab grown diamonds ada diamonds design ad 278

platinum 3.5ct radiant cut lab grown diamond engagement ring with trapezoid side stones ada diamonds design ad 278 side view

18k white gold radiant cut 3ct lab diamond engagement ring wiht trapezoid side stones ada diamonds design ad 278 profile

platinum 4 ct radiant cut and trapezoid three stone engagement ring with lab diamonds ada diamonds design ad 278 macro

profile view of 3ct radiant cut engagement ring with trapezoid side stones ada diamonds design ad 278

14k yellow gold 4 carat radiant cut and trapezoid three stone engagement ring with lab diamonds ada diamonds design ad 278 macro

14k yellow gold 4 ct radiant cut lab diamond ring with trapezoid side stones ada diamonds design ad 278 profile

radiant and trapezoid three stone engagement ring

platinum radiant cut and trapezoid three stone lab diamond engagement ring ada diamonds design ad 278 profile view

radiant two tone lab diamond three stone ring

radiant cut with trapezoid side stones in platinum

platinum 3.75ct radiant cut lab diamond engagement ring with large trapezoid side stones ada diamonds design ad 278 macro

platinum 5 ct radiant cut and trapezoid three stone engagement ring with lab diamonds ada diamonds design ad 278 macro

4ct radiant cut lab diamond engagement ring with trapezoid side stones in platinum

lab created three stone ring with radiant cut and trapezoid side stones

1.5ct radiant cut lab diamond in three stone

2.5 Carat Lab Diamonds set in Platinum Radiant and Trapezoid Setting (Main View)

platinum lab diamond three stone ring with 2.25 ct radiant cut lab diamond and trapezoid side stones ada diamonds design ad 278 on model

2.5ct radiant cut lab diamond in three stone trapezoid setting in platinum

platinum 2.75ct radiant cut and trapezoid three stone lab diamond engagement ring ada diamonds design ad278 on model

platinum 3 carat radiant cut and trapezoid three stone lab diamond engagement ring ada diamonds design ad 278 on model

platinum 3.5ct radiant cut lab diamond engagement ring with trapezoid side stones ada diamonds design ad 278 on model

platinum 4.5 carat radiant cut lab diamond ring with trapezoid side stones ada diamonds design ad 278

4 carat radiant and trapezoid three stone lab created diamond engagement ring ada diamonds design ad 278

2 Carat Radiant and Trapezoid Three Stone Lab Diamond Engagement Ring in Platinum | Ada Diamonds

Profile 2ct Radiant and Trapezoid Three Stone Lab Diamond Engagement Ring in Platinum | Ada Diamonds

5 Carat Radiant Cut & Trapezoid Lab Grown Diamond Engagement Ring in 18k Yellow Gold | Ada Diamonds

2ct Radiant & Trapezoid Three Stone Lab Diamond Ring in 14 White & Yellow Gold | Ada Diamonds

Your Choice of Gold: 0.20ct Each Side Stones (~0.40ctw): $2,650 USD0.25ct Each Side Stones (~0.50ctw): $2,750 USD0.30ct Each Side Stones (~0.60ctw): $2,900 USD0.40ct Each Side Stones (~0.80ctw): $3,450 USD0.50ct Each Side Stones (~1.0ctw): $3,750 USD Starting at price is for the setting and side stones only (center stone priced separately) and includes DEF/VS lab grown diamond side stones. Platinum and two-tone available for an additional $300 fee. Subject to availability; all side stone weights and measurements are approximate.

A modern three stone engagement ring setting, featuring a pair of brilliant or step cut trapezoid lab grown diamond side stones in a basket or trellis style.