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.

All shapes
New stones coming after the next live

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.