Lab Grown Diamonds

Fortuna & Co.  ·  Lab Grown Diamond Atelier

Brilliance, chosen
by you.

Search our live collection of IGI-certified lab grown diamonds, all held in the United States and ready for your ring. Every stone is hand-selected and reviewed by our GIA Graduate Gemologist before it reaches you.

Search diamonds Speak with a gemologist
100,000+ diamonds in stock  ·  updated every 30 minutes

IGI certifiedEvery diamond graded by the International Gemological Institute.

Held in the USAOnly stones located in the United States, so delivery is quick and insured.

Reviewed by a GIA G.G.Personally checked by our GIA Graduate Gemologist before you commit.

Set by hand in ArcadiaPair any diamond with a custom setting made in our atelier.

Our promise

Every diamond, seen through a gemologist's loupe.

The grading report is only the beginning. Before any diamond leaves our atelier, our GIA Graduate Gemologist reviews it in person for brilliance, fire, and the small details a certificate can't show.

  • IGI report you can check online for every stone
  • Only diamonds held in the United States, so your order arrives quickly
  • Fully insured delivery, or pick up at our Arcadia showroom
  • Honest guidance, with no pressure to buy
Bespoke settings

From loose stone to the ring you'll wear forever.

Choose a classic solitaire, a halo, or a three-stone setting, or design something that is completely your own. We make each setting by hand in platinum or 14k and 18k gold, and our bench jewelers set your diamond in Arcadia.

  • Solitaire, pavé, hidden halo, three-stone, and bezel settings
  • Platinum, 14k or 18k yellow, white, and rose gold
  • Personal design consultation, in store or by video
Book a consultation
A gemologist's guide

Understanding the four Cs

Lab grown diamonds are real diamonds, with the same crystal structure, hardness, and fire as diamonds from the earth. They are graded on the same scale, so the same rules apply when you choose one.

I

Cut

Cut has the biggest effect on sparkle. For round diamonds, choose Ideal or Excellent so light returns through the top of the stone.

II

Color

D to F are colorless; G and H look white to the eye, especially in yellow or rose gold. Every diamond we offer is H or better.

III

Clarity

Anything from VVS1 to SI1 can be eye-clean. We review SI1 stones ourselves so you never see an inclusion in the finished ring.

IV

Carat

Carat is weight, not size. Compare the millimeter measurements; a well-cut 1.50 ct can look larger than a deep 1.70 ct.

Questions

Before you choose

Are lab grown diamonds real diamonds?

Yes. They are pure carbon with the same crystal structure as earth-mined diamonds, and they are graded by the same laboratories. Only specialized equipment can tell them apart.

Is the inventory really live?

Yes. Our collection syncs with our diamond partners about every 30 minutes and only shows stones currently held in the United States. Diamonds sell quickly, so when you reserve one we confirm it is still available before taking payment.

How does reserving a diamond work?

Choose "Reserve this diamond" and send us your details. A gemologist will reply within one business day to confirm availability, answer questions, and arrange payment and delivery. Reserving is free and you are not committed to buy.

How quickly will I receive my diamond?

Because every stone is already in the U.S., loose diamonds usually reach our Arcadia atelier within 2 to 4 business days. A custom setting adds about 2 to 3 weeks. Every delivery is fully insured.

Can I see the diamond before buying?

Yes. Most diamonds include a 360° video, and you are welcome to visit our showroom at 125 S 1st Ave, Arcadia, to see your diamond under the loupe with our gemologist.

Do prices include the setting?

Prices are for the loose, certified diamond. Settings are quoted separately according to your design, metal, and size.

Fortuna & Co.  ·  Arcadia, California

Let us find your diamond.

Share your budget and what you love. Our gemologist will send a personal shortlist from the live collection, with photos and video.

Call (626) 888-1355 Text us Visit the showroom

Prices are in U.S. dollars for loose lab grown diamonds and may change as inventory refreshes. Availability is confirmed at reservation. Diamond images and 360° videos come from the grading and imaging process; actual appearance may vary slightly. Reports are issued by IGI (International Gemological Institute). Inventory last refreshed recently.