LEONARDO DICAPRIO - "I’m proud to invest in Diamond Foundry Inc. – cultivating real diamonds in America without the human & environmental toll of mining."

Real Diamonds. Cultivated in America. No Middlemen.

Impeccable provenance

Our diamonds are cultivated in San Francisco in a foundry that re-creates the way in which Earth forms diamond.

While diamonds generally pass through a dozen owners with an origin impossible to trace, our lab created diamonds are guaranteed from us and direct to you.

Our production is boutique relative to the industrial scale of mining. Our footprint is small and sustainable.

For a diamond as rock solid as your values.

Learn More

Rare & Each Unique

Just like ice from a freezer is as real as ice from a winter roof, ours are real diamonds. The only difference is origin — and the reassurance that no questionable practices were involved.

Our lab created diamonds are very rare. Fewer than 0.01% of all diamonds are ours. That’s because mining is at least 1,000 times cheaper to scale than our complex technology.

Each diamond grows in its own way, with one-of-a-kind inclusions and unique growth patterns. No two man-made diamonds are alike. Each is unique to the core.

masterfully cut

Our diamonds are cut to the most exacting standards by our polishing operation whose management hails from Antwerp, Belgium with three generations of experience in diamonds.

Our Master Cutters in California made notable contributions to the industry — one invented the popular Princess Cut and the other directed the American School of Diamond Cutting.


We offer all classic cuts as well as special master cuts developed by us.

Exclusive Cuts

Learn more about our cuts

Uncompromising Quality

We only offer the highest quality diamonds.


Each diamond is graded by a GIA Gemologist according to the strictest professional standards.

We certify & warrant the reported Cut, Color, Clarity, and Carats.

We even guarantee 100% of your diamond’s value.

Please leave this field empty.

We look forward to hearing from you. If you would like to speak by phone, please leave a call-back number in your message.

Create an account

Receive member pricing, track orders, etc.

Please enter corrent email

Reset your password

Enter your email address below and we'll send you a new password.

Please enter corrent email

Save and share your favorite jewelry, please sign in:

By proceeding, you agree to our
Terms & Conditions.