Dia-Co Jewelry

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.

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.

06/08/2026

Here's another BTS of this vintage inspired cushion cut ring, and what it actually takes to get those details right.

When jewelers work with Diaco, they get:

- CAD turnaround in 24-48 hours
- Rush production options when you need them
- Internal software to track your order status in real time
- A dedicated account manager
- More time to take care of their customers

DM us to get started.

06/03/2026

Have your customers been asking for color? 💛

A retailer came to us with a customer who wanted something outside the usual bridal white. We went with yellow sapphire - durable enough for everyday wear, a fraction of the cost of a yellow diamond.

Here's how we brought it to life.

06/01/2026

Do your customers prefer a classic eternity band or something more like this?

Here's a BTS look at this mixed marquise and round diamond eternity band. The classic eternity with one type of cut repeated all the way around will always sell, but we're getting more requests from our partners for mixed cuts lately.

What are you seeing from your customers?

✨ Available to order - DM us

05/28/2026

Yes or no: horizontal diamond setting? 💍

The traditional vertical set elongates the finger and dominates the market for a reason. But the East-West style offers something different — wider, more modern, a little unexpected.

Does this belong in your showcase?

05/18/2026

Not every piece needs to arrive 100% complete.

Many retailers and custom jewelers we work with prefer to set their stones in-house, and we're built for that flexibility.

This ring headed to our client ready for their final touch - the center stone setting.

05/13/2026

Made for your clients by Dia-co

We made the band in this rose gold stack, and it's not your typical wedding band. Custom engraved texture, mixed metal details, and a design that stands out. Any design complexity is not a problem when you have a manufacturing partner that can make your clients' ideas come true, seamlessly.

When you can say YES to any design request, that's the foundation your business needs to scale with confidence.

Address

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

Telephone

+12136229608

Website

Alerts

Be the first to know and let us send you an email when Dia-Co Jewelry posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Dia-Co Jewelry:

Shortcuts

Share

Category