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.

Design your own ring →Quote a ring →
All shapesAsscherCushionCushion modifiedEmeraldHeartMarquiseOvalPearPrincessRadiantRound
1.05ct Cushion E VS1 IGI-certified lab-grown diamond
1.05ct Cushion · E VS1
IGI 828650137 · 7.23×5.25×3.49mm
1.05ct Cushion E VS1 IGI-certified lab-grown diamond
1.05ct Cushion · E VS1
IGI 826638983 · 7.24×5.23×3.55mm
1.06ct Cushion E VS1 IGI-certified lab-grown diamond
1.06ct Cushion · E VS1
IGI 826680342 · 7.27×5.24×3.55mm
1.06ct Cushion E VS1 IGI-certified lab-grown diamond
1.06ct Cushion · E VS1
IGI 828645589 · 7.24×5.21×3.53mm
1.5ct Cushion E VS1 IGI-certified lab-grown diamond
1.5ct Cushion · E VS1
IGI 828639942 · 8.21×5.9×4.02mm
2.08ct Cushion F VVS2 IGI-certified lab-grown diamond
2.08ct Cushion F VVS2 IGI-certified lab-grown diamond
3ct Cushion F VVS2 IGI-certified lab-grown diamond
3ct Cushion · F VVS2
IGI 823678691 · 8.53×8.37×5.56mm
3.08ct Cushion F VVS2 IGI-certified lab-grown diamond
3.08ct Cushion F VVS2 IGI-certified lab-grown diamond
3.08ct Cushion · F VVS2
IGI 785606367 · 10.28×7.46×5.02mm
3.08ct Cushion F VVS2 IGI-certified lab-grown diamond
3.08ct Cushion · F VVS2
IGI 784659993 · 10.36×7.48×5.02mm
3.08ct Cushion F VVS2 IGI-certified lab-grown diamond
3.08ct Cushion · F VVS2
IGI 784649467 · 10.25×7.45×5.02mm
3.09ct Cushion F VVS2 IGI-certified lab-grown diamond
3.09ct Cushion · F VVS2
IGI 787631400 · 10.44×7.53×5.01mm
3.1ct Cushion E VS1 IGI-certified lab-grown diamond
3.1ct Cushion · E VS1
IGI 795693690 · 10.39×7.53×5.07mm
3.1ct Cushion F VVS2 IGI-certified lab-grown diamond
3.1ct Cushion · F VVS2
IGI 797692757 · 10.44×7.51×5.03mm
3.1ct Cushion E VS1 IGI-certified lab-grown diamond
3.1ct Cushion · E VS1
IGI 809602187 · 10.4×7.51×5.06mm
3.1ct Cushion E VS1 IGI-certified lab-grown diamond
3.1ct Cushion · E VS1
IGI 798602725 · 10.34×7.44×4.98mm
4.05ct Cushion F VVS2 IGI-certified lab-grown diamond
4.05ct Cushion · F VVS2
IGI 805687177 · 11.42×8.33×5.58mm
4.06ct Cushion F VVS2 IGI-certified lab-grown diamond
4.06ct Cushion · F VVS2
IGI 815653602 · 11.15×8.16×5.53mm
4.07ct Cushion F VVS2 IGI-certified lab-grown diamond
4.07ct Cushion F VVS2 IGI-certified lab-grown diamond
4.07ct Cushion · F VVS2
IGI 813633782 · 11.26×8.19×5.48mm
4.09ct Cushion E VS1 IGI-certified lab-grown diamond
4.09ct Cushion · E VS1
IGI 816694009 · 11.39×8.29×5.52mm
4.1ct Cushion F VVS2 IGI-certified lab-grown diamond
4.1ct Cushion · F VVS2
IGI 817613609 · 11.38×8.24×5.49mm
4.1ct Cushion F VVS2 IGI-certified lab-grown diamond
4.1ct Cushion · F VVS2
IGI 720518068 · 11.44×8.28×5.51mm
4.1ct Cushion F VVS2 IGI-certified lab-grown diamond
4.1ct Cushion · F VVS2
IGI 815630277 · 11.39×8.21×5.45mm
4.72ct Cushion F VS1 IGI-certified lab-grown diamond
4.72ct Cushion · F VS1
IGI LG603367042 · 11.59×8.88×5.95mm
$1,014Buy now
5.05ct Cushion F VVS2 IGI-certified lab-grown diamond
5.05ct Cushion · F VVS2
IGI 814641419 · 12.21×8.81×5.96mm
$1,106Buy now
5.1ct Cushion F VS1 IGI-certified lab-grown diamond
5.1ct Cushion · F VS1
IGI 826616293 · 12.29×8.9×5.96mm
$1,108Buy now
6.02ct Cushion F VVS2 IGI-certified lab-grown diamond
6.06ct Cushion F VS1 IGI-certified lab-grown diamond
6.06ct Cushion · F VS1
IGI 838662086 · 12.95×9.29×6.17mm
$1,293Buy now

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.