Lab-Grown Diamond Engagement Rings

MiaDonna's lab-grown diamond engagement rings bring together exceptional craftsmanship, ethical sourcing, and lasting value. Each ring features a lab-grown diamond, optically, physically, and chemically identical to a mined diamond, set in precious metals and backed by our lifetime guarantee.

As the original lab-grown diamond company, selling lab-grown since 2005, we've spent nearly two decades redefining what fine jewelry can be. Every stone is independently graded, and every setting is crafted to last a lifetime.

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Solitaire

Side Stone

Halo

Hidden Halo

Three Stone

Bridal Sets

Vintage

Nature Inspired

Promise

Toi et Moi

315 Items

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Ellise Lab Grown Diamond Three Stone Wedding Set

Ellise Three Stone Wedding Set $ 2,935 (Setting Only)

Savannah Radiant Lab Grown Diamond Round Sides Three Stone Engagement Ring

Savannah Round Sides Engagement Ring $ 1,945

Betty 2 ½ ctw Round Lab Grown Diamond Trellis Three Stone Engagement Ring

Betty 2 ½ ctw Trellis Three Stone Engagement Ring $ 2,260

Matching Band

Hope Lab Grown Diamond Shared Prong Side Stone Engagement Ring

Hope Shared Prong Engagement Ring $ 1,105 (Setting Only)

Elsa Emerald Lab Grown Diamond Bezel Set Floating Solitaire Engagement Ring

Elsa Bezel Set Floating Engagement Ring $ 1,150 (Setting Only)

Matching Band

Khloe Lab Grown Diamond Side Stone Engagement Ring

Khloe Engagement Ring $ 1,335 (Setting Only)

Tamara Emerald Lab Grown Diamond Single Shared Prong Hidden Halo Engagement Ring

Tamara Single Shared Prong Engagement Ring $ 2,100

Harlee Lab Grown Diamond Twist Wedding Set

Harlee Twist Wedding Set $ 2,690 (Setting Only)

Camila Oval Lab Grown Diamond Cathedral Hidden Halo Engagement Ring

Camila Cathedral Engagement Ring $ 1,265 (Setting Only)

Addison Lab Grown Diamond East-West Half Bezel Solitaire Engagement Ring

Addison East-West Half Bezel Engagement Ring $ 1,145 (Setting Only)

Ellen Elongated Cushion Lab Grown Diamond Bezel Side Stone Engagement Ring

Ellen Bezel Engagement Ring $ 3,450 (Setting Only)

Zoey Lab Grown Diamond Halo Shared Prong Wedding Set

Zoey Halo Shared Prong Wedding Set $ 2,235 (Setting Only)

Amira Oval Lab Grown Diamond Six Prong Side Stone Engagement Ring

Amira Six Prong Engagement Ring $ 1,460 (Setting Only)

Sylvia Old Mine Cushion Lab Grown Diamond Etched Milgrain Side Stone Engagement Ring

Sylvia Etched Milgrain Engagement Ring $ 2,200

Presley Round Lab Grown Diamond Claw Prong Hidden Halo Engagement Ring

Presley Claw Prong Engagement Ring $ 1,750

Melody Radiant Lab Grown Diamond Single Shared Prong Collar Hidden Halo Engagement Ring

Melody Single Shared Prong Collar Engagement Ring $ 1,500

Mariana Radiant Lab Grown Diamond Vintage Milgrain Bezel Side Stone Engagement Ring

Mariana Vintage Milgrain Bezel Engagement Ring $ 2,440

Violette Lab Grown Diamond Milgrain Butterfly and Channel Wedding Set

Violette Milgrain Butterfly and Channel Wedding Set $ 3,275 (Setting Only)

Selene Oval Three Stone Ring in Rose Gold

Luna 3 ½ ctw Oval Double Claw Prong Engagement Ring $ 3,935

Carma Lab Grown Diamond Tapered Baguette Sides Three Stone Engagement Ring

Carma Tapered Baguette Sides Engagement Ring $ 1,270 (Setting Only)

Taylor Antique Elongated Cushion Lab Grown Diamond Vintage Bezel Side Stone Engagement Ring

Taylor Antique Elongated Cushion Halo Engagement Ring $ 2,545

Matching Band

Melanie Lab Grown Diamond Channel Side Stone Engagement Ring

Melanie Channel Engagement Ring $ 2,105 (Setting Only)

Eden Lab Grown Diamond Nature Inspired Leaf Motif Wedding Set

Eden Nature Inspired Leaf Motif Wedding Set $ 1,820 (Setting Only)

Matching Band

Eliana Lab Grown Diamond Idyllic Pave Side Stone Engagement Ring

Eliana Idyllic Pave Engagement Ring $ 1,550 (Setting Only)

Rylie Emerald Engagement Ring in Rose Gold

Rylie 3 ¾ ctw Emerald Bezel Engagement Ring $ 3,325

Uma Heart Lab Grown Diamond Shared Prong Hidden Halo Engagement Ring

Uma Shared Prong Engagement Ring $ 1,630 (Setting Only)

Demi Lab Grown Diamond Knife Edge Cathedral Solitaire Engagement Ring

Demi Knife Edge Cathedral Engagement Ring $ 1,420 (Setting Only)

Vivian Round Lab Grown Diamond Arch Hidden Halo Engagement Ring

Vivian Arch Engagement Ring $ 1,320 (Setting Only)

Kalina Cushion Lab Grown Diamond Vintage Side Stone Engagement Ring

Kalina Vintage Engagement Ring $ 1,910 (Setting Only)

Matching Band

Avery Lab Grown Diamond Interlaced Side Stone Engagement Ring

Avery Interlaced Engagement Ring $ 1,565 (Setting Only)

Matching Band

Eden Lab Grown Diamond Vine Side Stone Engagement Ring

Eden Vine Engagement Ring $ 1,560 (Setting Only)

Kara Lab Grown Diamond Cathedral Solitaire Wedding Set

Kara Cathedral Solitaire Wedding Set $ 3,040 (Setting Only)

Matching Band

Zoey Lab Grown Diamond Cathedral Halo Engagement Ring

Zoey Cathedral Engagement Ring $ 1,350 (Setting Only)

Maya Oval Lab Grown Diamond 5mm Cigar Band Solitaire Engagement Ring

Maya 5mm Cigar Band Engagement Ring $ 2,870 (Setting Only)

Diana Oval Lab Grown Diamond Princess-Inspired Vintage Halo Engagement Ring

Diana Vintage Engagement Ring $ 1,435 (Setting Only)

Matching Band

Willow Lab Grown Diamond Single Shared Prong Side Stone Engagement Ring

Willow Single Shared Prong Engagement Ring $ 955 (Setting Only)

Kirstin Lab Grown Diamond Claw Prong Solitaire Engagement Ring

Kirstin Claw Prong Solitaire Engagement Ring $ 960 (Setting Only)

Ava Lab Grown Diamond Stackable Halo Engagement Ring

Ava Stackable Engagement Ring $ 1,430 (Setting Only)

Romy Low Profile Engagement Ring $ 950 (Setting Only)

Odessa Round Lab Grown Diamond Flower Petal Solitaire Engagement Ring

Odessa Flower Petal Engagement Ring $ 1,270 (Setting Only)

Why Choose a Lab-Grown Diamond Engagement Ring from MiaDonna

Founded in 2005, MiaDonna has sold lab-grown diamonds exclusively from day one – the original lab-grown fine jeweler, without compromising on quality or design.

A lab-grown diamond engagement ring gives you the brilliance, durability, and fire of a mined diamond, without the environmental and humanitarian concerns tied to mining. At MiaDonna, every lab-grown diamond ring is crafted in precious metals and set with the finest lab-grown diamonds and gemstones, making your ring is as meaningful as the moment it represents.

When you choose a MiaDonna lab-grown diamond engagement ring, you also receive:

A lifetime guarantee on craftsmanship
Complimentary shipping globally
A 60-day return policy with one complimentary ring resizing
Complimentary engraving
The knowledge that one tree is planted with every purchase

Build Your Ring, Your Way

Not sure whether to start with the diamond or the setting? With MiaDonna's ring builder, you choose. Browse our full inventory of over 90,000 lab-grown diamonds to hand-select the exact stone you want, or choose a carat weight and quality range and let our diamond specialists select the best available match for you. Then pair it with a setting, or start with the setting first and work backward.

A step-by-step progress bar guides you through every choice, so you always know where you are and what's left to decide. Pricing updates in real time as you build, and your progress is saved automatically, so you can step away and pick up right where you left off.

When you build with MiaDonna, you also get:

Access to over 90,000 lab-grown diamonds, hand-selected or specialist-matched
Real-time pricing with no hidden costs at checkout
Every diamond backed by IGI, GIA and GCal certification
The same lifetime guarantee and complimentary resizing included with every ring

Custom Lab-Grown Diamond Engagement Rings

Can't find the exact ring you're envisioning? MiaDonna's custom design service lets you create a one-of-a-kind lab-grown diamond engagement ring from scratch. Choose your diamond shape, carat weight, and quality, then select your setting style and metal – our expert jewelers bring your vision to life with the same ethical craftsmanship behind every ring in our collection.

The process is simple and guided. Start with a complimentary consultation with one of our non-commissioned jewelry experts, who will walk you through design options, provide renderings, and help you refine every detail before production begins. Whether you're reimagining a family heirloom, designing from a sketch, or starting with just an idea, MiaDonna makes it possible, all with lab-grown diamonds, precious metals, and the same lifetime guarantee that comes with every ring we craft.

Custom lab-grown diamond engagement rings from MiaDonna typically take four to six weeks from consultation to delivery, with complimentary shipping and our standard 60-day return policy included. Click here to learn more about our custom design services.

Finding the right lab-grown diamond engagement ring comes down to a few important considerations, from diamond quality to fit to budget.

Understand the Four Cs

Cut, color, clarity, and carat weight are the primary characteristics that determine a diamond's beauty and value. Of these, cut has the greatest impact on a diamond's brilliance and sparkle, making it worth prioritizing over the others if you're working within a set budget.

Set a Budget

Lab-grown diamond engagement rings typically cost considerably less than comparable mined-diamond rings, which means your budget goes further. That means a larger center stone, a more intricate setting, or both. Establishing a budget early narrows the search and makes comparing styles and shapes easier.

Know Your Partner's Style

Pay attention to the jewelry they already wear. Do they gravitate toward classic pieces, vintage designs, or modern minimalism? If you're unsure, MiaDonna's non-commissioned jewelry experts offer complimentary consultations to help you decide between solitaire, halo, three-stone, and vintage-inspired settings.

Choose the Right Metal

Consider your partner's skin tone, lifestyle, and existing jewelry when selecting between platinum, white gold, yellow gold, or rose gold. Each metal offers a different balance of durability, tone, and maintenance.

Think About Lifestyle

An active partner may prefer a lower-profile setting like a bezel or flush mount, while someone who loves glamour may lean toward a halo or side-stone design. The right engagement ring setting should hold up to how your partner actually lives day to day.

Verify Ring Size

Use MiaDonna's Ring Sizing Guide , or borrow a ring your partner already wears on their ring finger. Every MiaDonna engagement ring includes one complimentary resizing within 60 days.

Look for Certification

MiaDonna's lab-grown diamonds are certified by IGI (International Gemological Institute), which grades lab-grown stones using the same 4Cs standards applied to mined diamonds, ensuring verified quality and authenticity.

MiaDonna offers lab-grown diamond engagement rings in every style imaginable, so you can find the perfect ring for the person you love.

Solitaire Engagement Rings

A single lab-grown diamond set in a classic band — timeless, elegant, and designed to let the stone speak for itself. Our solitaire lab-grown diamond rings are available in round, oval, cushion, emerald, pear, marquise, and princess cuts.

Halo Engagement Rings

A center lab-grown diamond surrounded by a frame of smaller accent stones, creating the appearance of a larger, more brilliant centerpiece. Halo lab-grown diamond engagement rings are ideal for maximizing sparkle and visual impact.

Three-Stone Engagement Rings

Symbolizing past, present, and future, three-stone lab-grown diamond rings feature a larger center stone flanked by two complementary gems. This style is one of MiaDonna's most meaningful and popular designs.

Vintage & Antique-Inspired Rings

For those drawn to old-world charm, our vintage-style lab-grown diamond engagement rings incorporate intricate milgrain detailing, filigree work, and romantic silhouettes that recall a bygone era.

Hidden Halo Engagement Rings

A lab-grown diamond set above a delicate ring of smaller accent stones concealed beneath the center stone. Hidden halo lab-grown diamond engagement rings deliver extra sparkle visible from the side profile while maintaining a clean, streamlined look from above.

Side-Stone Engagement Rings

Accent diamonds line the band to complement the center stone, adding depth and brilliance from every angle. Side-stone lab-grown diamond engagement rings offer an elegant step up from a simple solitaire.

Promise Rings

A meaningful step before the proposal, lab-grown diamond promise rings symbolize commitment and devotion. MiaDonna's promise rings feature elegant, understated designs with lab-grown diamonds that are perfect for marking the beginning of your journey together.

What is a lab-grown diamond engagement ring?

A lab-grown diamond engagement ring features a diamond created in a controlled laboratory environment using advanced technology that replicates the natural diamond-forming process. Lab-grown diamonds are optically, physically, and chemically identical to mined diamonds.

Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds have the same crystal structure, chemical composition, hardness (10 on the Mohs scale), and optical properties as earth-mined diamonds. They are certified by the same grading organizations and are indistinguishable to the naked eye.

What are conflict-free engagement rings?

Conflict-free engagement rings use diamonds and materials sourced through ethical, ecologically responsible, and socially conscious practices. Because all MiaDonna diamonds are lab-grown and our metals are recycled, every MiaDonna engagement ring is conflict-free.

Can I design a custom lab-grown diamond engagement ring with MiaDonna?

Absolutely. MiaDonna offers a custom design service where you can choose from a range of settings, metals, and lab-grown diamonds or gemstones to create a ring that is uniquely yours. Our team guides you through every step of the process.

What metals are available for MiaDonna lab-grown diamond engagement rings?

MiaDonna offers platinum, 14K and 18K white gold, yellow gold, and rose gold. All metals are recycled and responsibly sourced.

How do I find the right ring size?

Use MiaDonna's online Ring Sizing Guide , or visit a local jeweler for a professional measurement. If the fit isn't perfect, every MiaDonna engagement ring includes one complimentary resizing within 60 days of purchase.

What are the most popular lab-grown diamond engagement ring settings?

The most popular settings at MiaDonna include classic solitaires, halo designs, three-stone rings, and vintage-inspired settings. Each style highlights the center diamond in a unique way.

Can MiaDonna engagement rings be resized?

Yes. MiaDonna offers one complimentary resizing (up or down one full size) within 60 days of when your ring ships, including return shipping.

Does MiaDonna have a physical store where I can view lab-grown diamond rings in person?

Yes. MiaDonna's flagship boutique is located in Portland, Oregon. You can visit the store to browse the collection, try on rings, and work with our jewelry experts in person.

Lab-Grown Diamond Engagement Rings

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Sort By

Style (1)

Why Choose a Lab-Grown Diamond Engagement Ring from MiaDonna

Build Your Ring, Your Way

Custom Lab-Grown Diamond Engagement Rings

What is a lab-grown diamond engagement ring?

Are lab-grown diamonds real diamonds?

What are conflict-free engagement rings?

Can I design a custom lab-grown diamond engagement ring with MiaDonna?

What metals are available for MiaDonna lab-grown diamond engagement rings?

How do I find the right ring size?

What are the most popular lab-grown diamond engagement ring settings?

Can MiaDonna engagement rings be resized?

Does MiaDonna have a physical store where I can view lab-grown diamond rings in person?

Lab-Grown Diamond Engagement Rings

Sort By

Style (1)

Why Choose a Lab-Grown Diamond Engagement Ring from MiaDonna

Build Your Ring, Your Way

Custom Lab-Grown Diamond Engagement Rings

Your Purchase, Your Moment

How to Choose the Perfect Lab-Grown Diamond Engagement Ring

Shop Lab-Grown Diamond Engagement Rings by Shape