Dia-Co Jewelry

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Dia-Co Jewelry Dia-Co is a full-service custom jewelry manufacturing partner based in Los Angeles, providing end-to-end solutions for designers, brands, and retailers.

Founded in 1994, we specialize in transforming ideas into reality with in-house CAD design, premium casting, stone setting, and finishing — all done to the highest quality standards.

10/01/2026

The hands behind the jewelry we make for your clients.

Our weekly series showing you the pieces we’re creating for our retail partners and their customers.
09/23/2026

Our weekly series showing you the pieces we’re creating for our retail partners and their customers.

Have a piece in mind? Dia-Co manufactures custom jewelry for retailers and private jewelers. Send us the spec, we'll quo...
09/19/2026

Have a piece in mind?

Dia-Co manufactures custom jewelry for retailers and private jewelers.

Send us the spec, we'll quote it.

After working behind the scenes with 350+ retailers across the U.S., our Account Managers see the same challenges come u...
09/17/2026

After working behind the scenes with 350+ retailers across the U.S., our Account Managers see the same challenges come up every year. So we pulled together 5 things we’d recommend avoiding before things get busy.

Need help planning for the holiday rush? DM us.

09/15/2026

A few pieces spotted on our benches today, and what they look like shortly before they ship to the retailers who ordered them.

We get to help independent jewelers take a customer's idea and turn it into a finished piece. Here are a few of the piec...
09/11/2026

We get to help independent jewelers take a customer's idea and turn it into a finished piece. Here are a few of the pieces we worked on this week.

09/09/2026

You make a promise to your client. We make sure you can keep it.

08/19/2026

Not sure how to bring your client’s custom idea to life?

Even for the most complicated pieces (and we’ve seen quite a few), we can have the CAD ready within 24–48 hours.

We send the interactive 3D model to you, and you can share it with your client. They can open it right on their phone, view it from every angle, and no app is required.

Need changes? We offer unlimited edits until you and your client are happy with the design.

08/06/2026

6-day rush custom manufacturing for only an additional $50? Yes!

Because we know your customers aren't just waiting for jewelry, they're waiting for proposals, anniversaries, birthdays, and once-in-a-lifetime moments that cannot be delayed.

When your client needs it by next week, we're here to help make it happen.

⚡Standard manufacturing: 8–12 business days
⚡Rush option: 6 days

06/12/2026

Channel setting looks clean from the outside but it's one of the more unforgiving techniques in production. Every stone has to sit perfectly or the whole thing reads off. Zero margin for error, and that's exactly what makes it satisfying to get right.

Send us a test project and see the difference firsthand.

Address

550 S. Hill St #1055
Los Angeles, CA
90013

Telephone

+12136229608

Website

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