Custom & Bespoke Jewellery · Bedfordview, Johannesburg
Custom diamond jewellery in South Africa, designed with you
Commission bespoke natural diamond jewellery with Prodiam in Bedfordview, Johannesburg. Bring your idea for a ring, pendant, earrings or bracelet, or a diamond you already own. We develop the design with you, select suitable stones and agree the complete quote before making begins.
Brief us on a bespoke piece Browse ProJewel pieces → Email Darren directly →
Some diamonds are cut in-house and others sourced through the certified trade. Your brief determines the stone selection, 18k gold or platinum, and the making. Design by appointment or remotely, with insured delivery across South Africa.
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Natural diamonds only
We sell natural diamonds and diamond-set jewellery. Ask us about the grading report and available origin documentation for your chosen stone. Why we don’t sell lab-grown →
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Independent grading reports
The grading laboratory is shown per stone. Review its report and the individual diamond before choosing; sourced examples can include GIA, EGL and IGI.
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Insured delivery, SA & worldwide
Overnight across South Africa via Brink’s, G4S or our nominated jewellery courier. Insured worldwide dispatch via Ferrari Group and FedEx Custom Critical.
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14-day in-person exchange
In-person sales at the viewing room come with a 14-day exchange courtesy on stock pieces. Distance-sale CPA cooling-off applies.
Design the jewellery around the diamonds you choose
Start with the piece you want, how you will wear it and the total budget. We compare suitable natural diamonds and develop the design around their dimensions, colour and appearance. A pair of earrings needs an attractive match; a tennis line needs a consistent look across its stones.
Prodiam combines diamond dealing with the Procut DCW cutting and polishing operation. Some diamonds are cut in-house and others sourced through the certified trade. Ask about the supply route and documentation for the individual stones proposed for your piece.
Approve the diamond selection, design and complete VAT-inclusive quote before work starts. The quote should identify the metal, any additional stones, making and delivery. Compare those details with another quotation to judge the value of the finished piece.
Personalised jewellery we design and make to order
Custom and personalised jewellery at Prodiam is the default, not a premium add-on, and it runs across every category of fine jewellery. This is the hub for personalised pendants, earrings, bracelets and redesigns; the engagement-ring commission has its own home at custom engagement rings. Each piece is built to your brief, set with natural diamonds we have cut or matched ourselves, and priced on application:
- Rings of every kind, engagement rings, wedding and eternity bands, right-hand and dress rings, and signet rings, in 18k white, yellow or rose gold, or platinum.
- Pendants and necklaces, solitaire, halo, three-stone and cluster pendants on a matched chain, the centre stone supplied with its own GIA report.
- Earrings, stud, halo and drop, with the two centre stones matched into a true pair within one colour and one clarity grade.
- Bracelets, tennis and line bracelets with every diamond cut and matched along the run, plus bangle and station styles.
- Resets and remodels, an inherited or existing stone built into a new piece, or a tired heirloom reworked into something worn again.
If you would rather begin with the stone than the design, you can search our live diamond inventory and see fully-landed ZAR prices on GIA-certified natural diamonds, then have us build the piece around the one you choose. Not sure where to start? Tell us what the piece is for and Darren will point you the right way within 24 hours.
Jewellery design and manufacture, step by step
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Brief
We talk through the piece, the kind of jewellery, the stone shape and carat weight, the colour and clarity range, the design direction, the metal, your budget and your deadline, in person by appointment or by video. We respond within 24 hours and agree the brief in writing.
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Stone & quote
We cut or match the diamonds at Procut DCW, or source to your spec, and quote a firm ZAR figure in writing, against the stones, the metal and the making, with VAT shown, before any work begins. If you are supplying your own stone, we read it honestly first.
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Sketch or CAD
A hand sketch for simpler pieces, or a computer-aided design render for anything intricate, sent for sign-off. We revise until you are happy, and a resin or wax fit-check is available for complex profiles before any metal is committed.
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Cast
The approved design is cast in 18k white, yellow or rose gold, or platinum, with any calibrated side stones or matched accents prepared on the bench alongside it.
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Set & finish
Each diamond is set at the bench and the piece hand-polished to a mirror finish, then checked under loupe and microscope for quality control before it leaves us.
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Hand-over
Presentation at Bedfordview by appointment, or insured overnight courier nationwide via Brink’s or G4S. GIA / EGL certification, a written insurance valuation, and full provenance paperwork are included.
Designing around a stone you already own
A bespoke piece does not have to start with a new diamond. A loose stone bought elsewhere, a diamond traded back to you, or an inherited stone in a setting nobody wears can all become the heart of something new.
For any stone we did not cut, the commission opens with an honest read: we confirm what the GIA report says, or grade the stone fresh if there is no current report, identify the inclusions on the plot, and tell you candidly what you have. If a lower-tier laboratory has overgraded it, we say so.
If the cut sits well below modern targets and a recut would meaningfully change the piece, we tell you what the weight loss and the benefit would be, and leave the decision to you. We sell diamonds for a living, so we read them straight when you bring one in.
Because the stone is yours, we price only the design and the manufacturing, never a centre-stone margin. Resetting a single stone into a new piece runs through our stone-you-own service; reworking a whole inherited piece, where the metal as well as the stone is part of the story, runs through heirloom redesign and remodelling.
Either way, the original metal is returned to you, and you decide whether it is reworked into the new piece or kept as it is. If a piece simply needs attention rather than a redesign, resizing and repair covers resizing, claw and shank work, and replacing a lost stone on the same bench.
Realistic timelines, and how price is built
Most made-to-order pieces run about three to six weeks from approved design to finished item. Commissions that involve regrading a stone, a recut, or matching a full line of diamonds sit a little longer, usually six to ten weeks.
The honest answer is that the bench, not the brief, sets the pace, and we would rather tell you a true date than a flattering one, so bring your deadline to the brief and we will confirm whether it is achievable before you commit.
On price, a bespoke piece is built up from its parts rather than marked up from a ticket. The diamonds usually account for most of the cost, set by carat, colour, clarity and cut against the Rapaport list less a trade discount, converted from dollars to rand, with 15% VAT added; the metal weight and the design and bench work sit on top.
Carat price climbs faster than carat weight, and the round numbers (the half-carat, the full carat, the two-carat) carry a small premium of their own, which is why a stone a hair under a magic weight can be the smart buy. You see each element rather than one opaque figure, and the quote is firm and in writing before work starts.
For firm, fully-landed ZAR figures on specific stones, the source-a-diamond inventory is the place to look.
Where to go next
Everything below is made to order on the Bedfordview bench. Pick the route that fits the piece you have in mind, or simply brief us directly and we will steer you.
- Bespoke engagement rings The engagement-ring commission in full, solitaire, halo, hidden-halo or three-stone, built around a single hero diamond cut on our own bench.
- A ring around a stone you own Bring a loose, traded-back or separately-sourced diamond and we design and build the ring around it, with no centre-stone margin and an honest read of the stone first.
- Heirloom redesign & remodelling Inherited rings, retired bands and family stones graded, recut where it genuinely helps, and remade into a piece the next generation will wear.
- Resizing & repair When a piece needs the bench but not a full redesign, resizing, claw and shank repair, and replacing a lost stone, handled by the same hands that make our rings.
- Fine jewellery, made to order The wider category beyond rings, pendants, earrings, bracelets and dress pieces, set with natural diamonds we have cut or matched ourselves.
- The ProJewel range Our fine-jewellery range and recent bench commissions, to brief from directly or take as a starting point for a piece of your own.
- Choose the diamond shape Round, oval, cushion, emerald, pear, princess, marquise and radiant compared, the first decision before any bespoke design begins.
- Source the stone first Browse the certified natural diamonds on our bench, each with a fully-landed ZAR price, then have us design the piece around the one you choose.
Custom and personalised jewellery in South Africa: common questions
What is custom and personalised jewellery, and how does it work in South Africa?
A bespoke piece is designed and made to your brief. At Prodiam this means natural diamond jewellery: a ring, pendant, pair of earrings, bracelet or reset of a piece you already own. We agree the brief, propose suitable stones, prepare a sketch or CAD where helpful, and obtain your approval before casting, setting and finishing. Consult in Bedfordview or remotely from elsewhere in South Africa.
Do you make personalised and custom jewellery to my own design?
Yes. Bring a sketch, reference photograph or an idea for how the piece should look and feel. We discuss the natural diamonds, metal, proportions and practical details, then develop the design with you. Some diamonds are cut in-house and others sourced through the certified trade; the piece is made around the stones and design you approve.
How much does custom and personalised jewellery cost in South Africa?
The quote depends on the diamonds, metal weight, design complexity and making. Tell us your total budget and the type of piece first. We then propose suitable stones and a design, with a written VAT-inclusive complete price before work begins. Sourced loose-diamond prices can help with the stone budget, but exclude the jewellery setting and making.
Can you design custom jewellery in Johannesburg around a diamond I already own or inherited?
Yes, and it is standard work for us. You can bring a loose stone bought elsewhere, a diamond traded back to you, or an inherited heirloom, and we design and build the new piece around it on the Bedfordview bench.
For any stone we did not cut, the first part of the commission is an honest read of what you actually have, confirmed against its GIA report or graded fresh if there is no current one, before a single design line is drawn. Because the stone is yours, we price only the design and the manufacturing, not a centre-stone margin.
Resetting an existing stone runs through our stone-you-own service; reworking a whole inherited piece runs through heirloom redesign.
What kinds of personalised jewellery can you make to order, beyond engagement rings?
Diamond-set wedding and eternity bands, pendants, matched studs and drop earrings, tennis bracelets, dress rings and diamond-set signets. We also redesign existing diamond jewellery and reset suitable inherited stones. Plain metal-only jewellery is not our offering. For an engagement ring, use the dedicated custom-engagement page; for an inherited piece, start with heirloom redesign.
How long does bespoke jewellery take to make?
Most made-to-order pieces run about three to six weeks from approved design to finished item: brief and stone selection, sketch or CAD sign-off, casting, setting and hand-polishing, then quality control under loupe and microscope. Commissions that involve resetting an inherited piece, re-grading a stone, or matching a full line of diamonds sit a little longer, usually six to ten weeks.
Tell us your deadline, an anniversary, a proposal, a milestone gift, in the brief, and we will tell you honestly whether it is achievable before you commit.
Where can I get jewellery designed and made if I am not in Johannesburg?
Yes, you can have jewellery designed and made by Prodiam from anywhere. Clients commission custom and personalised pieces across South Africa, as well as from abroad, without setting foot in the studio.
The design conversation happens by video, stones are chosen from GIA reports plus loupe photography and a live on-camera viewing, you sign off the sketch or CAD remotely, and the finished piece is delivered insured and overnight nationwide via Brink’s or G4S, or by jewellery-grade insured international courier. An existing stone can be sent to us the same way, insured, and returned with the finished piece.
If the piece is a ring, we confirm the size from one you already wear or from a measurement you take at home.
Last reviewed: June 2026.