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
1.01ct Cushion D VS1 IGI-certified lab-grown diamond
1.01ct Cushion · D VS1
IGI 809642595 · 6.82×5.16×3.51mm
2.1ct Cushion F VVS2 IGI-certified lab-grown diamond
2.1ct Cushion · F VVS2
IGI 789613428 · 9.12×6.56×4.37mm
3.05ct Cushion E VS2 IGI-certified lab-grown diamond
3.05ct Cushion · E VS2
IGI 798603001 · 10.32×7.43×4.92mm
3.08ct Cushion E VS2 IGI-certified lab-grown diamond
3.08ct Cushion · E VS2
IGI 798622552 · 10.09×7.61×5.13mm
4ct Cushion E VS2 IGI-certified lab-grown diamond
4ct Cushion · E VS2
IGI 810620855 · 11.32×8.16×5.41mm
$1,374Buy now
4ct Cushion F VVS2 IGI-certified lab-grown diamond
4ct Cushion · F VVS2
IGI 811665603 · 10.82×8.3×5.52mm
$1,387Buy now
5.04ct Cushion F VVS2 IGI-certified lab-grown diamond
5.04ct Cushion · F VVS2
IGI 655438773 · 11.6×8.97×6.03mm
$1,620Buy now
5.04ct Cushion E VS2 IGI-certified lab-grown diamond
5.04ct Cushion · E VS2
IGI 805688094 · 11.71×9.03×6.04mm
$1,700Buy now
6.16ct Cushion E VVS2 IGI-certified lab-grown diamond
6.16ct Cushion · E VVS2
IGI 723582689 · 12.91×9.41×6.38mm
$1,981Buy 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.