How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- Lab created diamonds cost 50 to 80 percent less than comparable mined stones, with the same hardness, brilliance, and certification.
- Clean Origin offers the longest return window here at 100 days, which matters most for a purchase you cannot see in person first.
- Blue Nile now carries the James Allen catalog after the October 2026 acquisition, keeping the 360-degree stone viewer alive.
- Prices move fast in this market, with lab prices falling through 2025 and 2026, so compare live listings rather than trusting any single guide figure.
- Certification matters more than brand: insist on IGI or GIA grading for any stone, and check the report number before paying.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 Brilliant Earth | Ethical sourcing and showrooms | From $836 for 1 carat | Not applicable |
 Blue Nile | Largest catalog, ex-James Allen | See website | Not applicable |
 Clean Origin | Lab-only specialist, long returns | From $512 for 1 carat | Not applicable |
 Ritani | Lowest loose-stone prices | From $278 for 1 carat | Not applicable |
 VRAI | Grows its own diamonds | See website | Not applicable |
 Grown Brilliance | Value and modern settings | From $430 for 1 carat | Not applicable |
 With Clarity | Home preview before buying | From $657 for 1 carat | Not applicable |
 Ada Diamonds | Luxury bespoke service | See website | Not applicable |
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The best lab created diamond companies
Starting priceFrom $836 for 1 carat
Free planNot applicable
Brilliant Earth is the pick for buyers who care most about where a stone comes from. It publishes supply chain transparency reports, offers traceable origin lines, and runs 42 showrooms in the United States where you can see settings in person before ordering. Founded in 2005, it is also the oldest ethical-sourcing brand in this list.
That care costs money. Guides place its prices 10 to 20 percent above most competitors, and the October 2026 price index lists a 1-carat stone near $836 against a market median near $544. If ethics and in-person service matter more than the lowest price, Brilliant Earth earns the premium. If price leads, start with Ritani or Clean Origin.
What we like- Traceable origin stones and published sourcing reports
- 42 United States showrooms
- 60-day returns
Watch out for- Prices run 10 to 20 percent above most rivals
- October 2026 index lists 1 carat near $836
Starting priceSee website
Free planNot applicable
Blue Nile became the biggest name here in October 2026, when it acquired James Allen. Shoppers can still browse every James Allen diamond through Blue Nile, keeping the 360-degree viewer that made James Allen famous for inspecting stones online. The combined catalog is the largest in this list, with natural and lab stones side by side.
Prices vary widely by stone, so the starting price here is "See website" rather than a single figure, and the October 2026 index puts Blue Nile near the higher end for comparable 2-carat stones. The showroom experience is thinner than Brilliant Earth. For selection size and stone inspection tools, Blue Nile leads.
What we like- Largest inventory including the James Allen catalog
- 360-degree stone viewer
- GIA and IGI certification
Watch out for- Prices vary widely by stone, so check live listings
- Showroom experience is thinner than Brilliant Earth
Starting priceFrom $512 for 1 carat
Free planNot applicable
Clean Origin sells only lab-grown diamonds, and that focus shows. Its team knows lab stones deeply, its prices sit near the value end, with the October 2026 index listing 1 carat near $512, and its 100-day return window is the longest in this list, which removes much of the risk of buying unseen.
It is online only, so you cannot see a setting in person first, and prices swing with sales, with one tracker noting a 33 percent median jump when a sitewide sale ended. For buyers who want a lab specialist, fair prices, and the longest time to decide, Clean Origin is the best value pick.
What we like- Lab-grown only, so deep expertise
- 100-day returns, the longest here
- IGI and GIA certification
Watch out for- Online only, no showrooms
- Prices swing with sales, so timing matters
- Smaller setting range than Blue Nile
Starting priceFrom $278 for 1 carat
Free planNot applicable
Ritani wins on price alone in the October 2026 index, listing 1-carat stones near $278, well below the $544 market median for comparable IGI-graded stones. It also offers preview through a local jeweler, which helps buyers who want to see a stone before committing without paying showroom-brand prices.
The setting range is narrower than Blue Nile or Brilliant Earth, and the local preview experience varies by partner jeweler. For buyers who pick the stone first and care most about price per carat, Ritani is the cheapest credible route to a certified lab diamond.
What we like- Lowest 1-carat index price near $278
- Local jeweler preview option
- GIA certification
Watch out for- Setting range is narrower than Blue Nile
- Service experience varies by local partner
Starting priceSee website
Free planNot applicable
VRAI is different because it grows its own diamonds rather than buying from many growers. That control lets it state energy sourcing for its production, which matters for buyers whose environmental case depends on how the stone was made. Designs stay clean and modern, and stones carry certification.
Prices sit above the market median in the October 2026 index, and the catalog is smaller than Blue Nile. For buyers who want a single accountable grower and a modern setting, VRAI is a strong choice. For the lowest price, Ritani or Grown Brilliance beats it.
What we like- Grows its own diamonds with stated energy sourcing
- Clean, modern designs
- Certified stones
Watch out for- Prices sit above the market median in the October 2026 index
- Smaller catalog than Blue Nile
Starting priceFrom $430 for 1 carat
Free planNot applicable
Grown Brilliance pairs value pricing with modern settings. The October 2026 index lists 1 carat near $430, below the market median, and frequent deals push effective prices lower. Settings lean contemporary, which suits buyers who want a clean, current ring rather than a classic catalog piece.
Prices moved often in 2026 trackers, with most listings cut in one monthly update, so treat any single figure as a snapshot and compare live listings. Brand recognition also trails the bigger names, though certification is the same IGI standard. For value with modern style, Grown Brilliance is a smart pick.
What we like- Strong value with 1 carat near $430
- Modern settings
- Frequent deals
Watch out for- Prices moved often in 2026 trackers
- Brand recognition trails Blue Nile and Brilliant Earth
Starting priceFrom $657 for 1 carat
Free planNot applicable
With Clarity solves the main fear of buying online: committing to a setting unseen. Its home preview lets you try settings before buying, and 30-day returns cover the rest. Stones carry GIA or IGI certification, and the October 2026 index lists 1 carat near $657.
That price sits above the $544 market median, so you pay for the preview service. The catalog is also smaller than Blue Nile. For buyers who want to hold the setting before deciding, With Clarity is the best low-risk route.
What we like- Home preview of settings before buying
- 30-day returns
- GIA and IGI certification
Watch out for- 1-carat index price near $657 sits above the median
- Catalog smaller than Blue Nile
Starting priceSee website
Free planNot applicable
Ada Diamonds is the luxury specialist. It focuses on top-tier lab stones and bespoke commissions, with concierge guidance for buyers spending serious money on a large or unusual stone. For a major purchase where cut precision and personal service matter more than catalog size, that attention is the point.
Prices vary by commission, so the starting price here is "See website", and there is no budget range. For most buyers, Ritani or Clean Origin delivers the same certified stone for less. For a bespoke luxury purchase, Ada Diamonds is the right call.
What we like- Bespoke luxury service
- Top-tier stones
- Concierge guidance for large purchases
Watch out for- Prices vary by commission, so check the site
- No budget range
- Online-first experience
How we chose
We started from what a diamond buyer must get right: certified grading, fair price per carat, and a return window long enough to inspect the stone. We compared vendor pages, the October 2026 lab-grown price index, and current guides, and we favored companies with IGI or GIA certification, published prices, and returns of 30 days or more. We left out uncertified sellers, marketplace-only listings, and brands whose grading could not be traced. Prices here are October 2026 index snapshots for comparable stones, and lab prices move fast, so compare live listings before you pay. A lab diamond is the same carbon crystal as a mined stone, but resale value differs, so buy for wearing, not investment.
How to pick a lab created diamond company
Start with the certificate, not the brand. Two stones with the same grade and the same IGI or GIA report are the same stone for practical purposes, whatever the brand charges for the setting around it.
Compare the same grade across sellers
Pick your grade first, such as 1 carat, D color, VVS clarity, excellent cut, then compare that exact grade across sellers. The October 2026 index shows the same grade ranging from $278 to $836 at 1 carat, so shopping around saves hundreds. Check the report number on the grading lab site before paying, and avoid any seller who cannot show the report.
Decide how much hand-holding you need
For the lowest price, Ritani or Grown Brilliance wins. For the longest decision window, Clean Origin gives 100 days. For in-person help, Brilliant Earth runs showrooms. For home preview, With Clarity lets you try settings first. For a bespoke commission, Ada Diamonds guides the whole purchase. Match the service to your comfort with buying unseen.
Check the setting and the metal
A great stone in a weak setting disappoints fast. Check the metal, 14K or 18K gold or platinum, the prong work, and whether the setting is cast or hand-finished. Lab stones are far cheaper than mined ones, so putting the savings into a better setting and a stronger metal is usually the smarter spend.
Frequently asked questions
Are lab created diamonds real diamonds?
Yes. They are the same carbon crystal structure as mined diamonds, with the same hardness and brilliance, and they carry the same IGI or GIA certification. The difference is origin: grown in a lab instead of mined from the earth.
How much should a 1-carat lab diamond cost in 2026?
The October 2026 index ranges from about $278 to $836 for comparable 1-carat stones, with a market median near $544. Prices fell through 2025 and 2026 and still move, so compare live listings for your exact grade.
What happened to James Allen?
James Allen was acquired by Blue Nile in October 2026. Its diamonds and its 360-degree viewer live on through Blue Nile, so shoppers can still browse the James Allen catalog there.
Which lab diamond company has the best return policy?
Clean Origin, with 100-day returns, the longest in this list. Brilliant Earth offers 60 days, and most others offer 30 days. A long window matters most when buying a stone you have not seen in person.
Do lab diamonds hold their value?
Not like mined diamonds. Lab prices have fallen sharply as production grew, so buy a lab diamond to wear and enjoy, not as an investment. Spend the savings on a better setting and metal instead.
Sources we checked (8)
- https://www.brilliantearth.com
- https://www.bluenile.com
- https://www.cleanorigin.com
- https://www.ritani.com
- https://www.vrai.com
- https://www.grownbrilliance.com
- https://www.withclarity.com
- https://www.adadiamonds.com
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.