Custom Jewellery Design & Manufacturing – Cassims & Co. Johannesburg

Custom Jewellery Design & Manufacturing – Johannesburg & South Africa

If you’ve ever dreamed of designing your own piece of jewellery, Cassims & Co. brings that dream to life. Work directly with our talented team from concept to completion — your vision, refined by expert jewellers, crafted with precision, and finished to perfection.

As a trusted family-owned jeweller with decades of manufacturing experience, we specialise in creating custom pieces using silver, 9K gold, 18K gold, platinum, natural diamonds, lab-grown diamonds, moissanite and gemstones. Every piece is designed in-house and manufactured locally, ensuring exceptional quality and outstanding value.

Because your jewellery is created directly in our workshop, you get the perfect balance of luxury craftsmanship and excellent savings — no middlemen, no unnecessary markups, just fine jewellery made exactly for you.

Why Choose Cassims & Co. for Custom Jewellery?

✔ Decades of jewellery manufacturing expertise
✔ Precision CAD design with realistic 3D renderings
✔ In-house manufacturing for better pricing & quality control
✔ Skilled goldsmiths specialising in hand-finished craftsmanship
✔ Natural diamonds, lab-grown diamonds, moissanite & gemstones
✔ Manufacturing in silver, 9K gold, 18K gold, and platinum
✔ Private consultations & personalised design guidance
✔ Redesigning & modernising old jewellery
✔ Transparent pricing with no hidden fees
✔ Safe, insured delivery across South Africa
✔ Trusted family jewellers known for honesty, quality & service
✔ Free cleaning & polishing on completion
✔ Unlimited design adjustments before you approve the final CAD

Our Custom Design Process

1. Consultation & Concept

Bring your ideas, inspiration images, or favourite styles. We’ll discuss your design goals, stone options, metal choices, budget and timeline.

2. Detailed CAD Design & 3D Renders

We create accurate digital models so you can preview your jewellery from every angle before it is made.

3. Stone Selection

Choose from:

  • Natural diamonds

  • Lab-grown diamonds

  • Moissanite

  • Coloured gemstones

  • Your own diamonds or stones

We guide you through cut, clarity, colour, and sizing to choose the perfect stone.

4. Manufacturing in Silver, Gold or Platinum

Your custom piece is crafted in:

  • Silver

  • 9K gold

  • 18K gold

  • Platinum

All pieces are made in-house for precision and consistency.

5. Hand Finishing & Quality Control

Every item is hand-finished and inspected multiple times for durability, shine and secure stone setting.

6. Collection or Nationwide Delivery

Collect from our Johannesburg showroom or receive secure, insured delivery anywhere in South Africa.

What We Can Create

  • Bespoke engagement rings

  • Custom lab diamond engagement rings

  • Custom wedding bands & bridal sets

  • Men’s rings, signet rings & cufflinks

  • Diamond & gemstone pendants

  • Earrings, bracelets & bangles

  • Personalised name jewellery

  • Redesigns & heirloom modernisation

  • Using your old gold or stones for a brand-new piece

If you can imagine it, we can create it.

We Work With Any Budget — Beautiful Jewellery at Every Price Point

The beauty of your piece is determined by design and craftsmanship — not by how much you spend.

We can create the same design using:
Silver, 9K gold, 18K gold, moissanite, lab-grown diamonds or natural diamonds,
giving you the same look with different cost options.

Whether you want an affordable custom piece or a luxury high-end design, we will guide you honestly and create something beautiful within your budget.

Redesign & Transform Your Old Jewellery

Turn outdated or inherited jewellery into something modern and meaningful, while preserving sentimental value.

We can:

  • Reset diamonds & gemstones

  • Reuse your existing gold

  • Upgrade settings

  • Convert rings to pendants or earrings

  • Modernise old styles

  • Transform heirloom jewellery into wearable, timeless pieces

This is one of our most popular services.

FAQ – Custom Jewellery Manufacturing

Can you design remotely via WhatsApp?
Yes — you can send photos or ideas through WhatsApp and approve CAD designs online.

Do you work with silver or platinum?
Yes — we manufacture in silver, 9K gold, 18K gold, and platinum.

Can I choose lab-grown diamonds?
Absolutely — we offer both lab-grown and natural diamonds.

Can you recreate a design from a picture?
Yes — we can accurately recreate almost any design.

How long does the process take?
Generally 1–3 weeks depending on complexity.

Do you provide CAD & 3D renders?
Yes — all custom pieces include detailed previews before manufacturing.

Can you use my own gold or stones?
Yes — we often work with client-supplied materials when suitable.

Is delivery insured?
Yes — all shipments are secure and fully insured.

Why Cassims & Co.?

✔ Trusted family jewellers with decades of experience
✔ Expert guidance & transparent pricing
✔ In-house manufacturing for higher quality & better pricing
✔ Exceptional craftsmanship guaranteed
✔ Thousands of pieces created
✔ Johannesburg showroom
✔ Nationwide delivery

Start Your Custom Piece Today

📞 WhatsApp: 072 798 6959
📍 Mall of the South, Johannesburg
✉️ info@cassimsandco.co.za

Send us your idea, sketch or inspiration — we’ll craft it into something truly special.