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 →
All shapesAsscherCushionCushion modifiedCusqEmeraldHeartMarquiseOtherOvalPearPrincessRadiantRound
1ct Emerald D VS2 IGI-certified lab-grown diamond
1ct Emerald · D VS2
IGI 800642923 · 6.63×4.72×3.25mm
1.21ct Emerald D VS2 IGI-certified lab-grown diamond
1.21ct Emerald · D VS2
IGI 652439016 · 7.09×5.03×3.49mm
1.98ct Emerald D VVS2 IGI-certified lab-grown diamond
1.98ct Emerald · D VVS2
IGI LG743544375 · 8.43×6.02×3.99mm
2.02ct Emerald FANCY VS1 IGI-certified lab-grown diamond
2.09ct Emerald F VS1 IGI-certified lab-grown diamond
2.09ct Emerald · F VS1
IGI 795695138 · 8.59×6.05×4.09mm
2.51ct Emerald F VVS2 IGI-certified lab-grown diamond
2.52ct Emerald F VVS2 IGI-certified lab-grown diamond
3.04ct Emerald FANCY VS1 IGI-certified lab-grown diamond
3.04ct Emerald · FANCY VS1
IGI LG814640567 · 9.37×6.68×4.73mm
$1,143Buy now
3.09ct Emerald E VS2 IGI-certified lab-grown diamond
3.09ct Emerald · E VS2
IGI 752514870 · 9.83×6.86×4.65mm
3.1ct Emerald E VS1 IGI-certified lab-grown diamond
3.1ct Emerald · E VS1
IGI 747518716 · 9.97×6.87×4.57mm
3.1ct Emerald E VS1 IGI-certified lab-grown diamond
3.1ct Emerald · E VS1
IGI 746543203 · 9.58×7.08×4.73mm
4.22ct Emerald E VS1 IGI-certified lab-grown diamond
4.22ct Emerald · E VS1
IGI 655420415 · 10.82×7.75×5.1mm
$1,117Buy now
4.26ct Emerald E VS1 IGI-certified lab-grown diamond
4.26ct Emerald · E VS1
IGI 658472617 · 10.58×7.84×5.28mm
$1,141Buy now
5.04ct Emerald E VS2 IGI-certified lab-grown diamond
5.04ct Emerald · E VS2
IGI 692593212 · 11.39×8.42×5.55mm
$1,493Buy now
7.03ct Emerald F VVS2 IGI-certified lab-grown diamond
7.03ct Emerald · F VVS2
IGI 733577221 · 12.63×9.32×6.24mm
$1,884Buy now
8.05ct Emerald F VVS2 IGI-certified lab-grown diamond
8.05ct Emerald · F VVS2
IGI 724581603 · 13.77×9.48×6.28mm
$2,233Buy 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

Bought from us? We'd love to hear how it went.

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.