Lab-Grown Diamond Engagement Rings

Q: How do I determine the correct ring size?

You should use MiaDonna's ring size guide , borrow a ring your partner already wears, or have the size professionally measured. Eligible rings include one complimentary resizing under current policy.

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 warranty.

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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Hidden Halo

Three Stone

Bridal Sets

Shop Lab-grown Diamond Antique Engagement Rings

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Promise

Toi et Moi

363 Items

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Camila Oval Lab Grown Diamond Cathedral Hidden Halo Engagement Ring

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

Heidi 3 ¾ ctw Princess Lab Grown Diamond Decorative Prong Side Stone Engagement Ring

Heidi 3 ¾ ctw Princess Decorative Prong Engagement Ring $ 2,875

Callie Round Lab Grown Diamond Single Shared Prong Hidden Halo Engagement Ring

Callie Single Shared Prong Hidden Halo Engagement Ring $ 1,485

Daphne Lab Grown Diamond Basket Three Stone Engagement Ring

Daphne Basket Engagement Ring $ 1,115 (Setting Only)

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

Melody Single Shared Prong Collar Engagement Ring $ 1,500

Evelyn Lab Grown Diamond Classic Prong Stackable Wedding Set

Evelyn Classic Prong Stackable Wedding Set $ 2,135 (Setting Only)

Matching Band

Khloe Lab Grown Diamond Side Stone Engagement Ring

Khloe Engagement Ring $ 1,335 (Setting Only)

Matching Band

Aria Round Lab Grown Diamond Tension-Inspired Bezel Solitaire Engagement Ring

Aria Tension-Inspired Bezel Engagement Ring $ 2,220

Rosey Lab Grown Diamond Flowering Solitaire Engagement Ring

Rosey Flowering Engagement Ring $ 1,065 (Setting Only)

Ellise Lab Grown Diamond Three Stone Wedding Set

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

Presley Round Lab Grown Diamond Claw Prong Hidden Halo Engagement Ring

Presley Claw Prong Engagement Ring $ 1,750

Matching Band

Rani Round Lab Grown Diamond Lasso Rope Solitaire Engagement Ring

Rani Lasso Rope Engagement Ring $ 2,260

Annie Three Stone Engagement Ring in Rose Gold

Annie 2 ctw Round U-Shaped Engagement Ring $ 1,850

Lola Radiant Lab Grown Diamond Three Stone Engagement Ring

Lola Three Stone Engagement Ring $ 2,050

Eden Lab Grown Diamond Nature Inspired Leaf Motif Wedding Set

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

Ava Lab Grown Diamond Stackable Halo Engagement Ring

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

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

Tamara Single Shared Prong Engagement Ring $ 2,100

Imara Bezel Three Stone Ring in Rose Gold

Imara 2 ½ ctw Emerald Bezel Set Engagement Ring $ 2,465

Kelse 2 ctw Round Luxe Wide Band Trellis Engagement Ring $ 2,715

Rosemary 2 ¾ ctw Diamond Accent Side Stone Engagement Ring $ 2,065

Stella Emerald Lab Grown Diamond Baguette Sides Three Stone Engagement Ring

Devon Baguette Sides Engagement Ring $ 1,530 (Setting Only)

Milani 4 ctw Toi et Moi Engagement Ring $ 3,630

Margot Lab Grown Diamond Hidden Halo Engagement Ring

Margot Engagement Ring $ 1,240 (Setting Only)

Ellen Elongated Cushion Lab Grown Diamond Bezel Side Stone Engagement Ring

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

Leigh Emerald Lab Grown Diamond Claw Prong Solitaire Engagement Ring

Leigh Claw Prong Solitaire Engagement Ring $ 2,190

Amira Oval Lab Grown Diamond Six Prong Side Stone Engagement Ring

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

Isabella Lab Grown Diamond Vintage Scroll Halo Engagement Ring

Isabella Vintage Scroll Engagement Ring $ 1,910 (Setting Only)

Greya 2 ⁵⁄₈ ctw Emerald Lab Grown Diamond Semi Bezel Three Stone Engagement Ring

Greya 2 ⁵⁄₈ ctw Emerald Semi Bezel Engagement Ring $ 2,125

Why Choose a MiaDonna Lab-Grown Diamond Engagement Ring?

Founded in 2005, MiaDonna has specialized in lab-grown diamond jewelry since its inception. MiaDonna lab-grown diamonds are real diamonds with the same chemical, physical, and optical properties as mined diamonds. They offer the same hardness, durability, and brilliance you expect from a diamond.

The only difference is where they come from. MiaDonna lab-grown diamonds are created in a controlled laboratory environment rather than extracted from the earth.

MiaDonna offers engagement rings in a range of shapes, carat weights, settings, and precious metals, so you can find a design that suits your partner and your budget.

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

A lifetime manufacturing warranty on craftsmanship
Complimentary U.S. shipping
A 60-day return policy
One complimentary ring resizing within 90 days of shipment, including free shipping
Complimentary engraving where applicable
Support from non-commissioned jewelry specialists
One tree planted with every purchase

MiaDonna is also a Certified B Corporation, reflecting its commitment to responsible business practices.

Build Your Ring, Your Way

You do not have to settle for a preselected diamond and setting. MiaDonna lets you personalize available designs around the details that matter to you.

Once you select a MiaDonna lab grown diamond engagement ring, you can build your ring your way by personalizing the available options for that design. Choose your preferred diamond shape, carat weight, cut, color, clarity, precious metal, and ring size to create the combination that best fits your style and budget.

Available metal options may include 14K & 18K White Gold, 14K & 18K Yellow Gold, 14K & 18K Rose Gold, and Platinum. You can also select from a wide range of lab-grown diamonds rather than being limited to a single preselected center stone.

Start with a setting you love from our lab created diamond engagement rings for women and choose a compatible center diamond, or select the diamond first and find an available setting that complements it.

Custom Lab-Grown Diamond Engagement Rings

Can't find the exact ring you have in mind? MiaDonna's custom design service lets you create a one-of-a-kind lab-grown diamond engagement ring tailored to your vision. MiaDonna's custom design service allows you to start with your own idea, sketch, inspiration image, or family heirloom.

Start with a complimentary consultation with one of our non-commissioned jewelry experts. We'll help you shape the design and personalize details such as the diamond shape, carat weight, quality, setting style, accent stones, and precious metal.

Our team provides design guidance and renderings before production begins, helping you refine the ring with confidence.

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

The best lab-grown diamond engagement rings are not simply those with the largest carat weight or the highest grade. The right ring balances how the diamond looks, how the ring fits your partner's style and lifestyle, and what you want to spend.

Start With the Diamond

Use the 4Cs, i.e., cut, color, clarity, and carat weight, to compare diamonds without getting lost in technical grades. This will help you decide where to prioritize your budget.

Cut

It affects how much light the diamond returns. This directly influences its brilliance and sparkle. If sparkle is a priority, compare cuts carefully rather than choosing a diamond based on carat weight alone.

Color

This refers to how much color a diamond shows. Higher grades appear more colorless, while your metal choice can also affect how the diamond looks. Compare the diamond and setting together rather than choosing a color grade in isolation.

Carat Weight

It measures a diamond’s weight, not its visible size. If you want the diamond to look larger on the finger, compare its measurements and shape as well as its carat weight.

Clarity

This refers to the inclusions and blemishes within and on a diamond. A higher clarity grade does not automatically mean a better-looking diamond to the naked eye. Looking at all four together helps you spend your budget where it will make the biggest visual difference.

Set a Budget

Set your overall ring budget before comparing the diamonds. Lab-grown diamond engagement rings usually cost 40% less than natural diamond rings. This gives you much more flexibility for a larger stone, a more intricate setting, or both.

Know Your Partner's Style

Pay attention to the jewelry your partner already wears. Do they gravitate toward classic pieces, vintage designs, or modern minimalism? These details can help you narrow down the engagement ring style. That’s how you buy the right lab-grown diamond engagement rings for women!

If you’re unsure, the non-commissioned jewelry experts at MiaDonna also offer a complimentary consultation to help you compare options.

Choose the Right Metal for Engagement Ring

Consider your partner’s existing jewelry when choosing a metal. Platinum and white gold offer a cool, bright look while yellow gold brings warmth and contrast. Rose gold has a softer blush tone.

Your partner’s existing jewelry can help you choose a metal that feels familiar and works naturally with what they already wear.

Think About Lifestyle

Consider how the ring will be worn every day. If your partner has an active lifestyle, look for a setting that feels practical for regular wear. If they prefer a more glamorous look, halo or side-stone styles add more visible sparkle. Compare the design's appearance with how your partner actually wears jewelry before choosing.

Verify Ring Size

Ring size can be difficult to determine when the proposal is a surprise. You can use MiaDonna’s ring size guide, borrow a ring your partner already wears on the correct finger, or have the size professionally measured. MiaDonna offers one complimentary resizing within 90 days of shipment, subject to its Ring Re-Sizing Policy.

Look for Certification

An independent diamond grading report documents a diamond's characteristics, including its 4Cs, so you can review its quality before you buy.

MiaDonna’s graded diamonds come with a complimentary grading report from the International Gemological Institute (IGI) or the Gemological Institute of America (GIA). Check the product page to see the grading report included with your selected diamond.

The setting changes how the center diamond looks on the hand and how much additional detail or sparkle surrounds it. Use the setting to match the style your partner already wears and the look you want for the ring.

Solitaire Engagement Rings

A solitaire keeps the center diamond at the heart of the design. Its clean, timeless profile lets the center stone take the focus.

Halo Engagement Rings

A halo surrounds the center diamond with smaller stones, adding sparkle and visual presence. It is a good choice if you want the ring to have a more noticeable, glamorous look.

Hidden Halo Engagement Rings

A hidden halo places accent diamonds beneath the center stone. It adds sparkle when the ring is viewed from the side while keeping the top view clean. It suits someone who wants extra detail without a prominent halo from the top.

Three-Stone Engagement Rings

Three-stone rings pair a center diamond with two side stones, creating more finger coverage and a balanced, three-diamond design. The three stones are traditionally associated with a couple's past, present, and future, making this style a meaningful choice for an engagement ring.

Side-Stone Engagement Rings

Side stones add brilliance without surrounding the center diamond with a full halo. The side-stone engagement ring adds extra sparkle while keeping the center diamond as the focal point.

Vintage and Antique Engagement Ring

Vintage and Antique style diamond engagement rings combine classic design details such as milgrain, filigree and intricate metalwork with a newly made setting. Choose this style if you want an engagement ring with distinctive character, decorative detailing and a timeless look without choosing an original antique ring.

Promise Rings

A promise ring can be a meaningful step before the proposal, symbolizing commitment and devotion. MiaDonna’s promise rings feature elegant, understated designs with lab-grown diamonds. They offer a way to mark your commitment before an engagement.

Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds are real diamonds with the same fundamental chemical composition and crystal structure as mined diamonds. They have the same essential properties as mined diamonds. The key distinction here is that they are created in a controlled environment rather than formed underground.

What is the difference between a lab-grown and a mined diamond engagement ring?

The main difference is how the diamonds are formed. Lab-grown diamonds are created in a controlled environment, while mined diamonds are formed naturally underground and extracted from the earth. Both are evaluated using the 4Cs.

What engagement ring style is most popular?

Solitaire engagement rings are the most popular choice due to their timeless design and focus on the center diamond. Some other popular options are halo, side-stone, three-stone and hidden halo.

Which lab-grown diamond shape should I choose?

Round-cut diamonds offer classic brilliance. Oval, pear, and marquise create elongated silhouettes. Emerald-cut diamond rings emphasize clean lines, while cushion-cut diamonds soften the look. Princess-cut diamonds give you a modern square shape.

Can I customize a MiaDonna lab-grown diamond engagement ring?

Yes. You can pair a selected lab-grown diamond with an available setting, or work with MiaDonna's team on a custom design.

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

Depending on the design, MiaDonna offers platinum and 14K or 18K white, yellow, and rose gold.

How do I determine the correct ring size?

You should use MiaDonna's ring size guide, borrow a ring your partner already wears, or have the size professionally measured. Eligible rings include one complimentary resizing under current policy.

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

Yes. MiaDonna's flagship boutique is in Portland, Oregon, where you can browse, try on designs, and speak with jewelry experts.

Lab-Grown Diamond Engagement Rings

Why Choose a MiaDonna Lab-Grown Diamond Engagement Ring?

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?

Start With the Diamond

Cut

Color

Carat Weight

Clarity

Set a Budget

Know Your Partner's Style

Choose the Right Metal for Engagement Ring

Think About Lifestyle

Verify Ring Size

Look for Certification

Shop Lab-Grown Diamond Engagement Rings by Shape

Round-Cut Diamond Engagement Rings

Oval-Cut Diamond Engagement Rings

Emerald-Cut Diamond Engagement Rings

Cushion-Cut Diamond Engagement Rings

Pear-Cut Diamond Engagement Rings

Marquise-Cut Diamond Engagement Rings

Princess-Cut Diamond Engagement Rings