Master Jeweler · Gemologist · CAD Designer

Handcrafted Fine Jewelry Designed to Tell Your Story

Custom jewelry, expert repairs, and bespoke commissions by Orlando Cajamarca — over 40 years of precision craftsmanship and gemological expertise.

Bespoke Commissions & Restorations

Bring Your Vision to Exquisite Reality

From heirloom restorations and engagement rings to state-of-the-art CAD modeling. Experience unmatched artistry tailored uniquely to you.

Our Expertise

Master Craftsmanship in Every Detail

A full-service atelier offering custom design, expert repair, cutting-edge CAD technology, and professional education.

01

Custom Design

From engagement rings to bespoke heirlooms, every piece is designed and handcrafted to your vision using traditional techniques and modern CAD technology.

02

Repair & Restoration

Expert ring resizing, stone replacement, prong repair, polishing, and full restoration services. Most repairs completed same day while you watch.

03

CAD & 3D Design

Precision computer-aided design brings your concept to life before casting. Visualize every detail of your piece in photorealistic 3D renderings.

04

Jewelry Education

Professional instruction in jewelry making, metalsmithing, and CAD design. Learn from a master with over two decades of teaching experience.

The Process

From Vision to Masterpiece

Every custom creation follows a meticulous four-step journey — ensuring your piece is exactly as you imagined.

01

Consultation

Share your vision. We discuss your design, select metals and gemstones, and define every detail.

02

CAD Design

Your concept takes shape in a precision 3D rendering, allowing you to visualize the finished piece.

03

Crafting

Using lost-wax casting and hand fabrication, your piece is forged with decades of expertise.

04

Setting & Finishing

Gemstones are expertly set, metals polished to perfection, and your masterpiece is revealed.

Lab-Grown vs Natural Diamonds - Gemstone Expertise
Gemstone Expertise

Lab-Grown vs. Natural Diamonds

Laboratory-grown diamonds are identical to mined natural diamonds in their physical, chemical, and optical properties. Graded with the same 4Cs, they are sustainable, conflict-free, and require considerably less energy to produce.

"As a certified Gemologist, Orlando guides you through selecting the perfect stone — whether natural or lab-grown — with expert precision and complete transparency."

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Why OCJ Designs

The Standard of Excellence

What sets a Master Jeweler apart from the rest.

40+ Years of Mastery

Decades of hands-on experience in custom design, stone setting, and jewelry fabrication.

GIA-Certified Gemologist

Trained at the Gemological Institute of America — every stone is evaluated with expert precision.

Diamonds Never Leave Your Sight

Watch your diamonds being set. Full transparency, full trust, at every stage.

On-Site, Same-Day Repairs

Most repairs and modifications completed the same day, right in our workshop.

Testimonials

Words from Our Clients

The trust of our clients is the greatest testament to our craft.

Nothing better to say other than Orlando is THE BEST JEWELER I EVER MET. Great service, fast, quality and unbeatable prices.

Louise Ross

Sacramento Attorneys' Service

Orlando transformed my grandmother's ring into a stunning modern piece while preserving its sentimental value. His craftsmanship is unmatched.

Maria S.

Custom Design Client

The level of detail in Orlando's CAD designs is incredible. You can see exactly what your piece will look like before it's made. True artistry.

James W.

Engagement Ring Client
Begin Your Legacy

Your Vision, Our Mastery

Whether it's an engagement ring, a family heirloom, or a personal treasure — let's create something extraordinary together.