IGI Certified · Laboratory-Grown · 360° Video on Every Stone · Free Insured US Shipping · IGI Certified · Laboratory-Grown · 360° Video on Every Stone · Free Insured US Shipping · IGI Certified · Laboratory-Grown · 360° Video on Every Stone · Free Insured US Shipping · IGI Certified · Laboratory-Grown · 360° Video on Every Stone · Free Insured US Shipping ·

Certified lab-grown diamonds,
auctioned live. Shop anytime.

Every stone is laboratory-grown, IGI-certified, and shown in 360° video. What you see is the exact stone you receive.

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0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round · D VVS2
IGI 753506428 · 4.43×4.41×2.69mm
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round · D VVS2
IGI 754544459 · 4.44×4.42×2.68mm
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round · D VVS2
IGI 754571639 · 4.47×4.45×2.67mm
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round · D VVS2
IGI 751510658 · 4.44×4.41×2.71mm
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round · D VVS2
IGI 743519036 · 4.43×4.41×2.71mm
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round · D VVS2
IGI 752572327 · 4.45×4.42×2.69mm
0.32ct Round D VVS2 IGI-certified lab-grown diamond
0.32ct Round · D VVS2
IGI 751501725 · 4.44×4.41×2.68mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 755508213 · 4.46×4.44×2.71mm
0.33ct Round E VS1 IGI-certified lab-grown diamond
0.33ct Round · E VS1
IGI LG791640630 · 4.48×4.52×2.61mm
0.33ct Round D VS1 IGI-certified lab-grown diamond
0.33ct Round · D VS1
IGI 804673032 · 4.47×4.45×2.73mm
0.33ct Round D VS1 IGI-certified lab-grown diamond
0.33ct Round · D VS1
IGI 794667306 · 4.48×4.46×2.69mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 755518487 · 4.44×4.41×2.78mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 754571627 · 4.46×4.44×2.76mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 754550701 · 4.47×4.43×2.76mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 754550696 · 4.54×4.51×2.69mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 752597702 · 4.49×4.44×2.77mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 741523547 · 4.45×4.41×2.72mm
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 755508171 · 4.47×4.44×2.75mm
0.33ct Round D VS1 IGI-certified lab-grown diamond
0.33ct Round D VVS2 IGI-certified lab-grown diamond
0.33ct Round · D VVS2
IGI 741515538 · 4.45×4.43×2.71mm
0.34ct Round E VS2 IGI-certified lab-grown diamond
0.34ct Round · E VS2
IGI LG705527316 · 4.42×4.45×2.8mm
0.35ct Round D VS1 IGI-certified lab-grown diamond
0.35ct Round · D VS1
IGI 794667349 · 4.55×4.53×2.79mm
0.35ct Round D VS1 IGI-certified lab-grown diamond
0.35ct Round · D VS1
IGI 794667845 · 4.54×4.53×2.79mm
0.35ct Round D VS1 IGI-certified lab-grown diamond
0.35ct Round D VS1 IGI-certified lab-grown diamond
0.35ct Round D VS1 IGI-certified lab-grown diamond
0.35ct Round · D VS1
IGI 804672395 · 4.54×4.51×2.77mm
0.42ct Round D VVS2 IGI-certified lab-grown diamond
0.42ct Round · D VVS2
IGI LG795616019 · 4.81×4.86×2.9mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 759506537 · 5.13×5.09×3.18mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 755504126 · 5.13×5.08×3.16mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 755503886 · 5.09×5.07×3.19mm
0.51ct Round D VVS2 IGI-certified lab-grown diamond
0.51ct Round · D VVS2
IGI 726535473 · 5.11×5.08×3.16mm
0.51ct Round D VVS2 IGI-certified lab-grown diamond
0.51ct Round · D VVS2
IGI 726536227 · 5.15×5.13×3.15mm
0.51ct Round D VVS2 IGI-certified lab-grown diamond
0.51ct Round · D VVS2
IGI 726535700 · 5.19×5.16×3.14mm
0.51ct Round D VVS2 IGI-certified lab-grown diamond
0.51ct Round · D VVS2
IGI 726535752 · 5.17×5.11×3.15mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 755504146 · 5.13×5.1×3.15mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 759506657 · 5.16×5.12×3.15mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 754522569 · 5.13×5.12×3.16mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 759507569 · 5.17×5.15×3.12mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 755503855 · 5.13×5.08×3.18mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 759507099 · 5.13×5.09×3.17mm
0.51ct Round D VS1 IGI-certified lab-grown diamond
0.51ct Round · D VS1
IGI 759506539 · 5.2×5.18×3.13mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 749570769 · 5.2×5.16×3.18mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 754522548 · 5.16×5.12×3.2mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 759506604 · 5.23×5.19×3.16mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 754522495 · 5.16×5.13×3.23mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 754522034 · 5.24×5.19×3.13mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 749571174 · 5.19×5.15×3.17mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 749571094 · 5.18×5.15×3.15mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 754513858 · 5.18×5.14×3.18mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 759506574 · 5.2×5.18×3.17mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 749570935 · 5.2×5.17×3.17mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 754522029 · 5.19×5.17×3.18mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 759506629 · 5.19×5.15×3.2mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 749571138 · 5.23×5.2×3.14mm
0.52ct Round D VS1 IGI-certified lab-grown diamond
0.52ct Round · D VS1
IGI 749570878 · 5.2×5.16×3.17mm
0.54ct Round D VVS2 IGI-certified lab-grown diamond
0.54ct Round · D VVS2
IGI 772665505 · 5.29×5.23×3.22mm
0.55ct Round D VVS2 IGI-certified lab-grown diamond
0.55ct Round · D VVS2
IGI 780684731 · 5.24×5.22×3.24mm
1.02ct Round D VVS2 IGI-certified lab-grown diamond
1.02ct Round · D VVS2
IGI 800638504 · 6.52×6.5×3.92mm
1.02ct Round D VVS2 IGI-certified lab-grown diamond
1.02ct Round · D VVS2
IGI 800639434 · 6.44×6.42×3.99mm
1.02ct Round D VVS2 IGI-certified lab-grown diamond
1.02ct Round · D VVS2
IGI 799674355 · 6.54×6.5×3.94mm
1.02ct Round D VVS2 IGI-certified lab-grown diamond
1.02ct Round · D VVS2
IGI 799656714 · 6.38×6.35×4.04mm
1.02ct Round D VVS2 IGI-certified lab-grown diamond
1.02ct Round · D VVS2
IGI 800645668 · 6.43×6.38×4.06mm
1.12ct Round E VVS2 IGI-certified lab-grown diamond
1.12ct Round · E VVS2
IGI 813657047 · 6.62×6.59×4.12mm
1.5ct Round E VVS2 IGI-certified lab-grown diamond
1.5ct Round · E VVS2
IGI 793644523 · 7.31×7.26×4.55mm
1.5ct Round E VVS2 IGI-certified lab-grown diamond
1.5ct Round · E VVS2
IGI 784693725 · 7.38×7.35×4.54mm
1.5ct Round E VVS2 IGI-certified lab-grown diamond
1.5ct Round · E VVS2
IGI 793642359 · 7.35×7.31×4.54mm
1.5ct Round E VVS2 IGI-certified lab-grown diamond
1.5ct Round · E VVS2
IGI 792637419 · 7.31×7.26×4.54mm
1.5ct Round E VVS2 IGI-certified lab-grown diamond
1.5ct Round · E VVS2
IGI 794683258 · 7.34×7.31×4.56mm
1.52ct Round F VVS2 IGI-certified lab-grown diamond
1.52ct Round · F VVS2
IGI 816672091 · 7.39×7.36×4.58mm
1.52ct Round F VVS2 IGI-certified lab-grown diamond
1.52ct Round · F VVS2
IGI 812606000 · 7.36×7.32×4.54mm
2.1ct Round F VVS2 IGI-certified lab-grown diamond
2.1ct Round · F VVS2
IGI 774610513 · 8.17×8.12×5.1mm
2.1ct Round F VVS2 IGI-certified lab-grown diamond
2.1ct Round · F VVS2
IGI 762539640 · 8.36×8.3×4.98mm
2.1ct Round F VVS2 IGI-certified lab-grown diamond
2.1ct Round · F VVS2
IGI 773605048 · 8.29×8.26×5.06mm
2.1ct Round F VVS2 IGI-certified lab-grown diamond
2.1ct Round · F VVS2
IGI 762527251 · 8.33×8.29×4.97mm
2.57ct Round E VVS2 IGI-certified lab-grown diamond
2.57ct Round · E VVS2
IGI 816653760 · 8.81×8.79×5.39mm
2.58ct Round E VVS2 IGI-certified lab-grown diamond
2.58ct Round · E VVS2
IGI 756518132 · 8.85×8.79×5.38mm
2.58ct Round E VVS2 IGI-certified lab-grown diamond
2.58ct Round · E VVS2
IGI 756515811 · 8.79×8.75×5.45mm
2.58ct Round E VVS2 IGI-certified lab-grown diamond
2.58ct Round · E VVS2
IGI 758547693 · 8.81×8.78×5.38mm
3.01ct Round F VVS2 IGI-certified lab-grown diamond
3.01ct Round · F VVS2
IGI 831622695 · 9.42×9.37×5.55mm
3.1ct Round E VS1 IGI-certified lab-grown diamond
3.1ct Round · E VS1
IGI 755528375 · 9.42×9.38×5.72mm
4.08ct Round E VVS2 IGI-certified lab-grown diamond
4.08ct Round · E VVS2
IGI 816688024 · 10.29×10.22×6.26mm

Looking for something specific?

Beyond what we auction live, browse thousands more certified natural & lab-grown diamonds — every shape, size and budget, shipped fully insured.

Browse the full collection →

That's what we guarantee

All diamonds sold by Matts Diamonds are laboratory-grown (man-made) diamonds — chemically and optically identical to mined diamonds, conflict-free, and independently graded by IGI. Every listing links to its verifiable IGI report and a 360° video of the exact stone. Free insured shipping within the USA.

What buyers say

5.0from 12 reviews
★★★★★
Gorgeous diamond. Fast shipping also!
— @josnguyens
★★★★★
Absolutely beautiful! Came with the certification, going to get everything taken to a jeweler hopefully in the next few weeks! Can’t wait 🩷
— @tc.roots.creations
★★★★★
As advertised
— @charles.s.wilson
★★★★★
Diamond stone is gorgeous!!
— @hollyblue7
★★★★★
Amazing love the lab diamond
— @hieverybody85
★★★★★
Received it sooner than expected and all I can say is gorgeous!!! Pictures and videos do not do it justice. In person it is an eye catcher!!!!!!
— @leamurray727
★★★★★
Gorgeous Stone very happy with purchase will buy again fast shipping
— @kristencappiellow
★★★★★
I am giving five star First because the price is very, very reasonable second, the communication is the best And third, the product is what you paid for. It’s not fake. It’s real you guys can go anywhere and check it out. It’s the real deal!!! thank you matt diamonds!!!!
— @ssapna62
★★★★★
Diamond was great and checked out with my jeweler! Getting a setting made for it and can’t wait to see the final result. Thanks Matts Diamonds!
— @d58ve
★★★★★
Very pretty in person! Shipping was super fast and the products looks amazing! Just deciding on how to design it now
— @micahcanizares
★★★★★
The perfect diamond for an incredible price
— @hey_itsnisa
★★★★★
BEAUTIFUL STONE
— @ericchefwilkerson

Frequently asked questions

Are lab-grown diamonds real diamonds?

Yes. Laboratory-grown diamonds are chemically, physically, and optically identical to mined diamonds — they are real diamonds, simply grown in a lab rather than mined. Every stone from Matts Diamonds is independently graded by IGI.

What does IGI-certified mean?

IGI (the International Gemological Institute) is an independent laboratory that grades each diamond's carat, color, clarity, and cut. Every listing links to its verifiable IGI report so you can confirm the grading yourself.

Will I receive the exact diamond shown?

Yes. Each listing shows the specific stone you will receive, along with a 360° video and its own IGI report — not a stock photo.

How do the live auctions work?

Stones are auctioned live on TikTok (@matsdiamonds), and the full collection is also available to shop anytime here on the site.

How is shipping handled?

Diamonds ship with free insured shipping within the USA, and you can track your order anytime from the Track my order page.