New Zealand's Direct-to-Consumer Jewellery Manufacturer

Manufactured by us. Sold directly to you. No traditional retail markups.

Luxury jewellery designed and handcrafted in New Zealand.

Engagement Rings

Discover our collection of beautiful engagement rings in many styles & metals — expertly crafted, transparently priced, because your love deserves nothing less.

handcrafted elegance

Celebrate with Stunning Diamond Bands

Because forever deserves the finest. Explore our wedding bands and find the one made for your forever.

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Design Your Love in Diamonds

Welcome to TJ Diamond — New Zealand's only direct-to-consumer fine jewellery manufacturer, where your story is at the heart of everything we create.

We believe the most important ring you'll ever give should feel personal, not pressured. So we threw out the rulebook.

✦ No retail markup
✦ No sales pressure
✦ No guesswork or surprises
✦ World-class engagement rings
✦ Craftsmanship you can trace
✦ Pricing you can trust

From raw metal to the final polish — every step, done under one roof.

Crafted From Sketches to Final Polish

At TJ Diamond, we don't simply sell jewellery—we manufacture it. Every piece begins as an idea, evolves through design and craftsmanship, and is meticulously finished to the highest standards. By manufacturing directly, we maintain exceptional quality while offering transparent pricing without traditional retail markups.

Manufactured by us. Sold directly to you. No traditional retail markups.

Four Process Blocks

Sketch & Design

Every piece begins with a concept, sketch, and careful planning.

Manufacturing & Casting

Produced through our New Zealand manufacturing facility and supported by our Houston casting house.

Stone Setting

Each diamond is expertly set for security, brilliance, and lasting beauty.

Final Polish & Quality Control

Every piece is inspected, polished, and finished before it reaches its new owner.

Learn about our process

Why Choose TJ Diamond?

✓ New Zealand Manufacturing

✓ Houston Casting House

✓ Ethical Lab-Grown Diamonds

✓ Direct-to-Consumer Pricing

✓ Custom Jewellery Specialists

✓ Lifetime Guarantee

✓ Expert Craftsmanship

Custom Design Your Dream Ring with Tj

TJ Diamond is a premier diamond jewellery store specialising in handcrafted engagement rings, wedding bands, and fine diamond jewellery. Founded on a passion for exceptional craftsmanship and ethical sourcing, we offer a curated collection of solitaire, halo, three-stone, and custom diamond rings in yellow gold, rose gold, and platinum. Whether you're searching for the perfect engagement ring or a timeless gift, our expert team is here to guide you every step of the way.

Contact Us

Contact Us