How Bespoke Diamond Jewellery Design Works in South Africa (2026 Guide)
What "Bespoke" Actually Means
The word gets used loosely in jewellery. For some dealers, "bespoke" means choosing from a few standard ring sizes and engraving a name inside. That's not what I do.
When I say bespoke, I mean we start from scratch. You bring me an idea — sometimes it's detailed, sometimes it's just a feeling — and we build a piece that didn't exist before you walked through my door (or sent me a WhatsApp). The stone is chosen for you specifically. The design is created for you specifically. No two pieces from Diagem are identical.
I've been doing this for over 25 years, and the bespoke commissions are still the work I find most satisfying.
Step 1: The Initial Consultation
We start with a conversation. This can happen in person, over the phone, or via WhatsApp — whatever's easiest for you.
I want to understand: Who is this for? What's the occasion? What's their personal style like? Are there existing pieces they love? Any shapes, metals, or styles they specifically don't want? And what's the budget?
That last question is important. I'd rather know the real number upfront than get two weeks into a design and discover we're working with different expectations. There's no judgment — I've built stunning bespoke pieces at R20,000 and at R600,000. The budget shapes what we can do, it doesn't limit the creativity.
After the initial consultation, I'll have a clear enough picture to start sourcing stone options and sketching a design direction.
Step 2: Stone Selection
The stone comes before the setting design. Every good bespoke piece is designed around the stone — not the other way around.
I'll present you with options based on your brief and budget. These come from our own cut diamonds and from our international dealer network — we have access to a global inventory, not just whatever happens to be in a local display case.
For each stone, you'll see the 4C specification, the GIA or IGI certificate, and where possible, a video showing how the stone behaves in light. I'll give you my honest recommendation — cut first, always — and explain the trade-offs between the options.
You choose the stone. We don't proceed without your sign-off.
Step 3: CAD Design
Once the stone is selected, our designer creates a detailed Computer-Aided Design (CAD) model. This is a precision 3D rendering of the piece, showing exact proportions, setting style, prong configuration, band profile, and any decorative details.
You'll receive the CAD renders to review — typically two or three angles showing the ring from above, from the side, and in perspective. At this stage, changes are straightforward. Want the band slightly narrower? The prongs in a claw rather than round style? A different profile on the inside of the shank? We adjust the CAD until you're happy.
This step is critical. A few days spent refining the CAD is worth it — changes become expensive once we're in physical manufacturing.
Step 4: Wax or Metal Prototype (When Needed)
For complex pieces, we sometimes produce a wax or silver prototype before committing to the final metal. This lets you hold the actual proportions in your hand, try it on, and confirm that what looked right on screen feels right in person.
Not every commission needs a prototype — for simpler designs, the CAD is sufficient. But for intricate pavé work, unusual shapes, or pieces with multiple components, I'd often recommend this step. We'd rather add a week and get it right than deliver a finished piece that isn't quite what you imagined.
Step 5: Manufacturing
CAD approved, stone selected, design signed off — now we make it. The piece is cast or fabricated in the chosen metal (platinum, 18ct yellow gold, 18ct white gold, or rose gold), the stone is set by hand, and any finishing work — polishing, engraving, surface textures — is completed.
Timelines depend on complexity. A classic solitaire: two to three weeks from CAD approval. A multi-stone design with pavé detailing or engraving: four to six weeks. If you have a deadline, tell me at the start and we'll plan around it.
Step 6: Quality Inspection
Before anything is packaged, I inspect it myself. The stone is confirmed against its certificate. The setting is checked for security — every prong, every pavé diamond. The overall piece is compared against the approved CAD renders. Only once I'm satisfied does it go into the packaging.
This isn't box-ticking. It's the step that ensures the piece you receive is what I promised you.
Step 7: Delivery
Tracked, insured, signed-for delivery to anywhere in South Africa. Five to ten working days. If you're in Johannesburg, you're welcome to collect in person.
The packaging is presentation-quality — this is a gift or an occasion, and it should arrive feeling like one.
What to Budget for Bespoke Work
At factory-direct prices, without high-street overhead:
Natural diamond bespoke solitaire: from R40,000
Natural diamond halo or three-stone: R80,000–R180,000
Complex design with multiple diamonds: R120,000–R400,000+
Lab-grown equivalents: approximately 40-60% of the natural prices above
Start Your Commission
The first step costs nothing. WhatsApp me or call +27 82 551 2103 and tell me what you're imagining.
Or explore our bespoke jewellery page for examples of what we've made. Every piece there started the same way — with a conversation.
Have questions? Chat with David, our diamond specialist — he responds within minutes.
Chat with David on WhatsApp