Cheapest and Best Places to Buy Lab-Grown Diamonds in 2024

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Lab-grown diamonds are not only cheaper than mined diamonds but also more ethical and better for the planet. That’s why lab-created diamonds are surging in popularity. But what are the best places to buy lab-grown diamonds?

We have extensive experience with lab-grown diamonds and jewelry, and we have spent decades studying diamonds. Finding the best and cheapest lab-grown diamond does not differ from searching for mined diamonds, and it’s just as important to buy from a reputable and trustworthy jeweler.

At LabGrownCarats, we have reviewed and secret shopped at numerous lab-grown diamond jewelers, both online and in their stores. As lab diamond experts, we review all the leading and major jewelers and sellers of lab-created diamonds. In this guide, we boil our in-depth lab diamond reviews down to the five best places to buy lab-grown diamonds online in 2025 so you can find the best lab-created diamonds at the best lab diamond price.

Our Recommended Best Places to Buy Lab-Grown Diamonds

If you just want the results and find out which lab diamond jewelers we recommend, we have listed them below. But we encourage you to read the full review and analysis of the best places to buy lab-created diamonds and jewelry.

Lab diamond jeweler	Best for	Link
	Best overall diamond quality, shopping, and service.	Best Overall
	The cheapest lab-grown diamonds and largest inventory.	Cheapest Diamonds
	Lab-grown diamond engagement rings and designs.	Best Designs
	The most sustainable diamonds and inventory.	Most Sustainable
	The best try-before-you-buy and engagement rings.	Try at Home

Best places to buy lab-grown diamonds and jewelry in 2025.

Table Of Contents

How We Tested Lab Diamond Jewelers
Why Buy Lab-Grown Diamonds?
The 5 Best Places to Buy Lab-Grown Diamonds Online in 2025
Lab-Grown Diamond Engagement Rings
How to Save Even More on Lab-Grown Diamonds Online
Detailed Reviews of the Best Places to Buy Lab Diamonds

How We Tested Lab Diamond Jewelers

It’s important to note that the quality of diamond sellers can vary greatly, and not all lab diamond jewelers are trustworthy. At LabGrownDiamonds, we review countless lab diamond jewelers. We continually analyze, test, and assess places to buy lab-created diamonds. Through our numerous lab diamond jeweler reviews, we have found the best places where you can buy lab diamonds.

With decades of diamond expertise, we assess lab diamond jewelers on crucial factors such as price, quality, shopping experience, customer service, trustworthiness, sustainability, shipping, and return policies. We have personally shopped at all the jewelers (in secret) and tested their customer support to provide an authentic review, so you can shop with confidence and find the best options available.

Ranking Criteria

We have evaluated and ranked all lab-grown diamond jewelers against these criteria:

Price
Diamond inventory
Jewelry selection
Quality
Shopping experience
Customer service
Shipping and return policies
Sustainability

Why Buy Lab-Grown Diamonds?

Lab-grown diamonds offer an opportunity to not only save more than 47% on diamonds that are 100% identical to mined diamonds. They are also better for the environment, the planet, and its people. In fact, lab-grown diamonds are the cleaner and the only guaranteed conflict-free diamond choice!

And yes, lab-grown diamonds are just as real as those mined from the earth. The physical and chemical composition is precisely the same, and so is the brilliance. Lab-created diamonds are graded exactly like mined diamonds are by the same diamond grading institutes.

But where should you buy lab-grown diamonds? Having learned that lab-grown diamonds are far superior to mined diamonds, the next step is finding the best places to shop for them and start saving on lab-created diamonds. To help you, you can rely on our lab diamond expertise to guide you.

The 5 Best Places to Buy Lab-Grown Diamonds Online in 2025

SALES ALERT! See the best diamond deals (terms apply):

Below you will find detailed reviews of each of our recommended jewelers in 2025, so you can make an informed decision. But if you want to skip ahead and just read the key points, you can read our quick diamond jewelers presentations just below. We have highlighted the pros of each of the best lab-grown diamond sellers so you can easily see which diamond jeweler is right for you.

The best shopping experience

James Allen is the best pick if you want expert guidance with the buying process. James Allen’s superior customer service will help you make sure you end up with the perfect diamond at the lowest possible price. Keep reading below or learn more in our detailed review of James Allen.

Outstanding customer service
Independent expert gemologist guidance
Excellent prices and high-quality diamonds

See Prices at James Allen

The cheapest lab-grown diamonds

Ritani not only has some of the absolute best prices on lab-grown diamonds. They also have the most extensive inventory of diamonds and the best options for building your own jewelry, including lab-grown diamond engagement rings. Learn more in the detailed Ritani review below.

The lowest and extremely transparent prices
The largest inventory of lab-grown diamonds
Best options for building your own jewelry

See Prices at Ritani

The best for engagement rings

Grown Brilliance is our pick for lab diamond rings and unique jewelry designs. Their ring design tool is outstanding, allowing you to customize and render any ring design you could imagine. Grown Brilliance boasts a large selection of jewelry designs, from classic to unique designs. Learn more in our Grown Brilliance review.

The best custom ring designer
Most extensive selection of classic and unique jewelry designs
Highly competitive prices

See Prices at Grown Brilliance

The best for the environment

Brilliant Earth is the best choice if environmental and ethical impact is important to you. They offer sustainably graded lab-grown diamonds, offset carbon emissions, and use recycled materials and packaging. And at very competitive prices! Learn more in the detailed review of Brilliant Earth below.

Sustainably graded diamonds and climate-neutral
Recycled metals and packaging materials
Very competitive prices

See Prices at Brilliant Earth

The best for try-before-you-buy

With Clarity is best known for its Home Preview, which lets you try on a 3D-printed diamond ring replica – sent to your home for free! They have a large selection of jewelry and engagement rings. Learn more about With Clarity lab-grown diamond engagement rings below.

Free Home Preview replica engagement rings
Large selection of lab-grown diamond engagement rings
Great prices and customer service

See Prices at With Clarity

Lab-Grown Diamond Engagement Rings

If you’re shopping for an engagement ring, we recommend looking for a lab-grown diamond engagement ring to get much more for your money. Read our below guides to help you through the complicated process of buying a lab-grown diamond engagement ring online:

How to Save Even More on Lab-Grown Diamonds Online

The best places to buy lab-grown diamonds online sometimes run sales, allowing you to save even more! Follow our list of current sales at the best places to buy lab-grown diamonds online and save up to 47%.

Detailed Reviews of the Best Places to Buy Lab Diamonds

If you are still unsure which is the best place to shop for lab-grown diamonds, you can dive into our detailed reviews of each of our recommendations below.

All our recommended jewelers allow you to properly inspect and choose the perfect diamond or diamonds for your jewelry purchase. They all offer excellent customer service, dedicated gemologist support, and, importantly, the lowest prices on the market.

James Allen Lab-Grown Diamonds

James Allen is one of the leading online jewelers and one of our two all-time favorite lab-grown diamond sellers. James Allen offers superior and unmatched customer service with on-call independent expert gemologists ready to jump on a call or chat with you to guide you through the complicated diamond purchase process.

James Allen also boasts the top diamond inspection features, including HD images and video, access to diamond certificates, and specifications. In addition, the return policies are generous, and customer service is friendly, responsive, and very effective.

James Allen’s prices are slightly higher than some of the other best places to buy lab-grown diamonds. However, this minor price increase is more than offset by the services offered.

James Allen is the perfect pick if you want expert guidance throughout the buying process and you want to take away any risk of not ending up with anything but the perfect diamond.

Read more about James Allen in our in-depth review and learn why we think James Allen is one of the top 5 best places to buy lab-grown diamonds online in 2025.

Price

Customer support

Buying Process

Inventory

Returns and service

Summary

James Allen is one of the absolute best places to buy lab-grown diamonds and is among our top picks for online jewelers. We cannot recommend James Allen highly enough and encourage anyone looking for a lab-created diamond to shop at James Allen.

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Ritani Lab-Grown Diamonds

Ritani offers one of the largest selections of lab-grown diamonds that we have seen at any jeweler (currently over 400,000 lab diamonds and 200,000 mined diamonds). The selection is massive and includes some of the highest-quality diamonds. You can find a diamond that fits your needs precisely at Ritani.

In addition, the prices on lab-grown diamonds at Ritani are some of the lowest on the market. As a result, you will maximize the bang for your diamond bucks when shopping at Ritani and can be sure to end up with a better diamond if you buy it at Ritani.

The diamond inspection features are not as advanced as what James Allen has in store, but more than adequate to perform the necessary due diligence before buying. You can also talk to a trained gemologist who can help guide you through the process and ensure that the diamond or diamonds you choose are perfect for your use case.

What sets Ritani apart is its partnership with physical jewelry stores, where you can inspect and pick up your purchase if you prefer to combine the experience of online and offline shopping. In addition, Ritani excels in post-purchase services, extending an array of free options (you just pay for shipping).

Ritani is for anyone who values a vast selection of diamonds at the best possible prices while not compromising customer support, guidance, and service. We highly recommend Ritani for any lab-grown diamond shopping – particularly when you value free services many years after purchase.

Read our detailed review of Ritani to learn why Ritani takes one of the top spots on our 2025 list of the six best places to buy lab-grown diamonds online. And check out any ongoing Ritani sales here.

Price

Customer support

Buying Process

Inventory

Returns and service

Summary

Ritani boasts one of the largest selections of lab-grown diamonds available on the market, with market-leading low prices. Combined, this makes Ritani a no-brainer for anyone shopping for lab-created diamonds. In addition, Ritani allows you to inspect and pick up diamonds at a local jeweler they partner with and offers excellent post-purchase services.

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Grown Brilliance Lab-Grown Diamonds

Grown Brilliance is our newest addition to our list of the best places to buy lab-grown diamonds. As you can read in our review of the best places to buy lab-grown diamond engagement rings, Grown Brilliance is our top-rated engagement ring jeweler, but Grown Brilliance is also one of the best places to buy lab diamonds overall.

We really think Grown Brilliance stands out with its innovative and fabulous ring design tool. The ring design tool lets you view a high-resolution 3D model of the ring set with the diamond of your choice. You can view it from any angle and customize it with countless ring designs and diamond combinations. It’s simple and easy to use, and in our opinion, it’s the best ring design tool out there.

By pairing one of their superb diamonds with a ring from one of the best and largest collections of rings, the ring designer enables you to create the perfect lab-grown diamond engagement ring.

Grown Brilliance also offers some of the best prices for lab-grown diamonds (see our comparison of lab-grown diamond prices), ensuring you get the best and largest diamond possible.

Additionally, Grown Brilliance is almost as environmentally friendly as Vrai (see our Vrai review) and Brilliant Earth (see below). Some of the jewelry designs and all of their boxes are made from recycled materials. Grown Brilliance only employs lab-grown diamonds, the environmentally sustainable diamond option, though they don’t yet offer sustainably certified diamonds.

The ability to examine diamonds and the whole shopping experience are comparable to those at Ritani. The only thing missing is direct access to diamond certifications, which are necessary for assessing diamonds – but are available upon request. And reputable diamond laboratories like IGI grade every one of Grown Brilliance’s diamonds (as opposed to Vrai and Lightbox Jewelry).

Similar to James Allen, the inventory of loose diamonds leans somewhat toward higher-quality diamond color grades. Higher color grades are frequently used for engagement rings, but we often advise going for lower diamond color grades.

With the inclusion of virtual appointments and a retail store in New York City, Grown Brilliance has joined the top-rated diamond jewelers by providing excellent customer service and the greatest shopping experience.

Grown Brilliance offers one of the most generous return policies, which provides 45 days of risk-free purchases. Shipment is also free, as it should be, though free expedited shipping would be welcome. Nevertheless, it is much better than the offerings of practically all other jewelers.

Read more about why Grown Brilliance is one of our favorite places to buy lab diamonds in our detailed review of Grown Brilliance.

Price

Customer support

Buying Process

Inventory

Returns and service

Summary

Grown Brilliance is one of our favorite and highest-ranked places to buy lab-grown diamonds and diamond jewelry. They offer the best experience for purchasing diamond rings with their market-leading ring designer, which allows you to customize any ring and see the exact ring in 3D, set with the diamond of your choice. In addition, Grown Brilliance offers the most extensive and complete inventory of jewelry designs with any imaginable type available, design collaborations, and creative and stunning designs. Lastly, Grown Brilliance has some of the best prices for lab-grown diamonds and jewelry, a focus on sustainability, and an excellent return policy.

4.7

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Brilliant Earth Lab-Grown Diamonds

Brilliant-Earth is another one of our highest-rated lab-grown diamond jewelers. Brilliant Earth is a leader in the ethical and environmentally-conscious diamond business. They offer both sustainably graded lab-grown diamonds and ensure that every step in the process is as environmentally friendly as possible. They offset carbon emissions, too, making Brilliant Earth the go-to place for the conscious lab-grown diamond consumer.

In addition, they offer very competitive prices and a vast selection of lab-grown diamonds, only surpassed by Ritani’s record diamond inventory. Not only do they have an extensive selection of diamonds, but they are also some of the highest-quality lab diamonds available.

Brilliant Earth has one of the best customer services, and the buying experience is phenomenal. You can easily assess diamonds and get expert gemologist advice to guide you through the process of buying lab-grown diamonds.

Learn more about them in our Brilliant Earth review and why we think they are among the best places to buy lab-grown diamonds.

Brilliant Earth Review - Lab-Grown Diamonds

Price

Customer support

Buying Process

Inventory

Returns and service

Summary

Brilliant Earth is a leader in ethical, environmentally friendly, lab-grown diamond jewelry. They are the clear choice for the conscious lab diamond consumer. Brilliant Earth takes many extra steps to ensure its climate footprint is as small as possible by offsetting carbon emissions and using recycled materials.

In addition, Brilliant Earth has an extensive selection of beautiful jewelry and the best lab-grown diamonds. The buying experience is outstanding, with great support and advice offered. The prices at Brilliant Earth are very competitive, too.

4.7

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With Clarity Lab-Grown Diamonds

With Clarity is our final pick of the best places to buy lab-grown diamonds online. In addition, With Clarity is our favorite choice for lab-created diamond engagement rings.

With Clarity is dedicated to selling lab-grown diamond engagement rings. And while they also retail other types of jewelry, their unique approach to selling engagement rings sets them apart.

What With Clarity does differently from any other seller we have come across is that they offer to produce a 3D-modelled replica of the engagement ring you are considering. That takes a lot of the risk and guesswork out of engagement ring shopping, arguably one of the highest-stake purchases that most people will ever make (perhaps unless you are the person being proposed to).

Notably, they will send you this replica model completely free of charge. Of course, it will not adorn the actual lab-created diamond you purchase, so this is purely for design inspection. However, this is particularly important when shopping for an engagement ring.

With Clarity also provides endless opportunities for ring customization, a great option when shopping for an engagement ring that you may want to be unique.

With Clarity’s prices are very competitive, so you’ll be sure that you end up with a great buy and as much for your engagement ring budget as possible. Their support is excellent, and they will guide you expertly through the buying process.

While they don’t offer similar advanced inspection features as James Allen or the same inventory as Ritani, they are exceptionally suitable for lab-created diamond engagement rings where ring customization is a higher priority than diamond selection and inspection.

With Clarity is for anyone looking for the best lab-grown diamond engagement ring and those who want to see it and maybe even try it before putting in the final order. Buying your engagement ring at With Clarity not only takes a lot of the uncertainty out of the buying process, but it will also get you one of the best and most radiating and beautiful diamonds for your budget. So, if you want to impress whomever you are planning to propose to, go with With Clarity.

Read more in our dedicated review of With Clarity to discover why we love With Clarity and why they are one of our top picks for lab-created engagement rings.

Price

Customer support

Buying Process

Inventory

Returns and service

Summary

With Clarity is our favorite lab-grown diamond jeweler dedicated to engagement rings. Their unique 3D-printed ring models, which they provide entirely free of charge, allow you to see what the ring would look like – before it’s produced and you commit to purchasing. This is perfect for a high-stakes purchase, such as an engagement ring. Combined with endless customization options, a good selection of lab-created diamonds, and excellent prices, we highly recommend shopping at With Clarity.

4.6

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