About Us

Direct Jewellery Manufacturer

Custom Jewellery, Engagement Rings & Diamond Manufacturing — Designed and Made In-House

At TJ Gold & Diamond, we are more than a jewellery retailer—we are a fully integrated jewellery manufacturer.

From initial concept and CAD design through to casting, stone setting, polishing, and final quality control, every stage of production is completed within our own facility. This allows us to deliver exceptional craftsmanship, faster turnaround times, and factory-direct pricing without the traditional retail markups.

Whether you're creating a bespoke engagement ring, a custom jewellery piece, or require commercial manufacturing services, our team works directly with you to bring your vision to life.

Factory Direct. Designed In-House. Manufactured Without Compromise.


Why Choose TJ Gold & Diamond?

Unlike traditional jewellery stores that outsource production, TJ Gold & Diamond controls the entire manufacturing process under one roof.

Direct Manufacturer Pricing

By eliminating multiple middlemen, we provide premium jewellery at highly competitive prices.

Complete Quality Control

Every piece is inspected throughout production, ensuring exceptional craftsmanship and consistency.

Advanced Technology

We combine modern CAD engineering, precision casting equipment, laser welding technology, and traditional bench craftsmanship.

Faster Production Times

Because we manufacture in-house, we can often complete projects significantly faster than businesses relying on overseas suppliers.

Natural & Lab-Grown Diamond Specialists

We offer both certified natural diamonds and premium lab-grown diamonds to suit every preference and budget.


Custom Engagement Rings

Design Your Perfect Ring

Every engagement ring begins with your vision.

Our team creates custom engagement rings tailored specifically to your chosen diamond or gemstone. Using advanced CAD technology, we engineer each setting to maximise beauty, security, comfort, and durability.

Our engagement ring services include:

  • Custom ring design

  • CAD rendering and approval

  • Natural diamonds

  • Lab-grown diamonds

  • Wedding bands

  • Diamond upgrades

  • Remodelling existing jewellery

Whether you prefer a timeless solitaire, hidden halo, trilogy setting, or a completely unique design, we manufacture every ring to the highest standard.


Custom Jewellery Manufacturing

We specialise in creating custom jewellery for private clients, designers, retailers, and commercial partners.

Our manufacturing capabilities include:

Gold Jewellery

  • Gold rings

  • Gold chains

  • Gold pendants

  • Gold bracelets

  • Custom gold pieces

Diamond Jewellery

  • Diamond rings

  • Diamond earrings

  • Tennis bracelets

  • Diamond pendants

  • Custom diamond designs

Bespoke Jewellery

  • One-off commissions

  • Family heirloom redesigns

  • Special occasion pieces

  • Corporate jewellery projects

Every piece is designed and manufactured with precision, using carefully selected materials and expert craftsmanship.


Our In-House Manufacturing Process

1. Jewellery Design & Consultation

The process begins with an idea, sketch, reference image, or consultation.

Our designers work closely with clients to understand their goals, preferences, and budget before creating detailed design concepts.

2. CAD Design & Engineering

Using professional jewellery CAD software, we create precise 3D models that allow clients to preview their jewellery before production begins.

This stage ensures:

  • Accurate dimensions

  • Precise stone placement

  • Optimised metal weight

  • Structural durability

3. Casting & Production

Our in-house casting facility transforms precious metals into highly accurate jewellery components using advanced casting technology.

This allows us to maintain complete control over quality, consistency, and turnaround times.

4. Stone Setting & Finishing

Our experienced bench jewellers complete the final stages of production through:

  • Precision stone setting

  • Laser welding

  • Hand finishing

  • Polishing

  • Quality assurance inspection

Only pieces that meet our strict standards leave the workshop.


Natural Diamonds & Lab-Grown Diamonds

We proudly offer both natural and lab-grown diamonds.

Natural Diamonds

Our natural diamonds are sourced through trusted suppliers and selected for exceptional beauty, quality, and value.

Lab-Grown Diamonds

Lab-grown diamonds offer the same physical, chemical, and optical properties as mined diamonds while providing outstanding value and larger stone sizes for the same budget.

Our team can help you compare both options and select the diamond that best suits your goals.


Wholesale & Commercial Manufacturing

TJ Gold & Diamond also works with:

  • Jewellery retailers

  • Independent designers

  • Online jewellery brands

  • Commercial jewellery businesses

  • Corporate clients

Our commercial manufacturing services include:

  • CAD development

  • Casting services

  • Production manufacturing

  • Stone sourcing

  • Product development

  • Private label manufacturing

We provide scalable manufacturing solutions while maintaining strict quality standards.


A Message From Our Founder

"Our mission has always been simple: create exceptional jewellery through complete transparency, expert craftsmanship, and direct manufacturing. When clients work with TJ Gold & Diamond, they work directly with the people designing, casting, setting, and finishing their jewellery. That level of control allows us to deliver quality and value that traditional retail models cannot match."

TJ Haddadin
Founder, TJ Gold & Diamond


Frequently Asked Questions

Do you manufacture jewellery in-house?

Yes. TJ Gold & Diamond operates a fully integrated jewellery manufacturing facility, including CAD design, casting, stone setting, polishing, and finishing.

Do you offer custom engagement rings?

Yes. Every engagement ring is custom designed around your chosen diamond or gemstone and manufactured in-house.

Do you work with lab-grown diamonds?

Yes. We offer both certified natural diamonds and premium lab-grown diamonds.

Can you redesign existing jewellery?

Absolutely. We regularly transform inherited, outdated, or damaged jewellery into new custom designs.

Do you provide jewellery manufacturing for businesses?

Yes. We work with retailers, designers, wholesalers, and commercial partners throughout New Zealand and internationally.

Where are you located?

TJ Gold & Diamond operates from Auckland, New Zealand, serving clients nationwide and internationally.


Start Your Project Today

Whether you're creating a custom engagement ring, manufacturing a bespoke jewellery piece, or seeking a trusted jewellery manufacturing partner, our team is ready to help.

Book a Consultation

Request a Custom Design

Explore Our Manufacturing Services

Speak With Our Jewellery Experts

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