Fine jewellery in South Africa, made to order by a diamond cutting house

What “fine jewellery” actually means

The phrase gets used loosely, so it is worth being precise, because the difference is in the materials and the making, not the marketing. Fine jewellery is made from a precious metal, solid 18k gold or platinum, and set with genuine gemstones, in our case natural diamonds, by a person at a bench. It is intended to be worn for a lifetime, repaired rather than replaced, and revalued over time. Fashion or costume jewellery is the opposite proposition: base metal with a thin plating, set with glass, cubic zirconia or other simulants, cast in volume and not built to be serviced. High-end jewellery sits at the top of the fine category, larger and finer stones, more demanding settings, more bench hours, but it is the same family. Everything Prodiam makes is fine jewellery in that strict sense, and most of it is made one piece at a time.

Solid metal, hallmarks and real standards

A fine piece is only as good as the metal it is built in, so we work in solid 18k gold, white, yellow or rose, and in platinum, never plated or gold-filled metal. 18k gold is 75 per cent pure gold, the long-standing standard for fine jewellery because it holds rich colour while staying durable enough for daily wear. Platinum is a denser, naturally white precious metal, heavier in the hand and prized for the security it gives claw and pave settings. The metal carries a hallmark stating its purity, so the buyer is not taking the maker’s word for it. The diamonds are natural and certified by GIA or EGL, with GIA the primary laboratory, and round brilliants are polished to GIA Excellent cut grade on our own bench. Each finished piece is handed over with its certification and a written valuation for insurance, and you can verify any GIA report number against the independent GIA report-check service before you settle. None of that is a premium add-on. It is simply what fine jewellery is supposed to carry.

Bench-made, not cast-and-imported

Most jewellery on a South African retail floor is bought in finished: cast in volume, often imported, and set with stones the retailer never saw as rough. That is efficient, and for a brand it is sensible, but it is a different thing from a piece made for you. At Prodiam a piece is built on the bench in Bedfordview, the centre stone cut or matched at Procut DCW, calibrated side stones matched in-house, the metal worked, the diamonds set by hand and the piece polished to a mirror finish before it leaves under loupe and microscope. Because we grade the stones ourselves, we can do the things a shop buying polished stock cannot: match a perfect pair of studs within one colour and one clarity grade, or run an entire tennis line so the diamonds carry evenly from end to end. That control is the quiet luxury in a fine piece, and it is only available to a house that handles the diamonds from rough to ring.

Cutter-direct luxury, the honest value case

Buying from a branded luxury house, a great deal of the price is the brand: the marketing, the boutique on the prime corner, the rent on the mall floor, all layered on top of a stone the house itself bought in from a polisher and a setting it had manufactured. The jewellery is genuine and beautifully finished, but you are paying for the logo on the box as much as for the gold and the diamond. Prodiam takes those layers out. We buy the rough at De Beers DBCM viewings and South African tender houses, our sister manufacturer D and D Diamonds CC having been a De Beers DBCM Emerging Beneficiation Customer since 2019, cut and polish it at Procut DCW, and set it on our own bench, so you pay for three honest things, the metal, the stones and the craft, at wholesale-level pricing referenced to the Rapaport list. The result is fine jewellery in solid 18k gold or platinum, hand-set and hallmarked, GIA or EGL certified, that rivals the branded houses on quality while costing materially less, because you are not subsidising a name. This is not a knock on the luxury houses. It is simply where the value sits when one Johannesburg house owns every step.

It is worth being clear about price, because we never quote a figure we cannot stand behind. A diamond’s rand price is built from the Rapaport list, less a trade discount, converted at the dollar-to-rand rate, plus 15 per cent VAT, and it climbs along a per-carat curve with steep premiums at the magic weights, the half-carat, the one-carat, the two-carat. Because that base moves daily with the exchange rate, a true live figure belongs on a tool, not on a fixed page. So rather than print a number that goes stale, we route you to the live diamond search with fully-landed ZAR prices, and the direct-versus-retail comparison sets out exactly which layers we remove and why that lands in your favour.

The ProJewel range and one-off commissions

Two paths lead into our fine jewellery. The first is ProJewel, our own fine-jewellery range and the living record of recent bench commissions, the showpieces and the brief-from pieces, set with stones we polished in-house. The second, and the one most clients take, is a one-off commission built entirely to your brief. Either way the work is yours to direct: you set the shape, the carat weight, the colour and clarity range, the design and the metal, and we cut or match the diamonds and make the piece. A custom engagement ring built around a single hero stone, a tennis bracelet, a pair of matched studs, a riviere necklace, an inherited stone reset into something to wear again, all of it comes off one bench, in one custody, from rough to finished item.

Everything below routes into the specific pieces and services. Each links through to its own page, where the design choices, the stone grades and the process are set out in full.

• The ProJewel range Our in-house fine-jewellery range and recent bench commissions, the showpieces, the brief-from pieces, and proof of what one cutting house can make. →
• Diamond jewellery, the full range The category hub for every diamond piece we make to order, from solitaire rings to tennis lines, with the rough-to-ring story behind each. →
• Bespoke & made-to-order How a one-off piece is designed and built around your brief, from a sketch, a reference photograph or an heirloom you want reset. →
• Custom engagement rings A bespoke engagement ring built around a single hero stone we cut ourselves, solitaire, halo, three-stone or hidden halo, set to your brief. →
• Tennis bracelets The luxury line piece, every diamond matched for colour, clarity and cut so the bracelet reads as a single unbroken run of light. →
• Diamond necklaces Solitaire, station and riviere necklaces, the centre or line stones matched on the bench and set on your choice of metal and chain. →
• Diamond earrings Perfect-pair studs, halos and drops, the two centre stones matched into one colour and one clarity grade, the thing only a cutter can promise. →
• Diamond bracelets Bangle, station and line styles beyond the tennis bracelet, each stone matched in-house and supplied on a GIA or EGL report. →
• Collections Curated one-off and themed pieces from the workshop, each made to order in solid gold or platinum and priced on application. →
• Brief us, or book a viewing Tell us what the piece is for, or book an appointment in Bedfordview where GIA South Africa shares the building. Darren replies within 24 hours. →

If you would rather begin with the stone than the setting, you can search our live diamond inventory and see fully-landed ZAR prices on GIA-certified natural diamonds, then have us set the one you choose into a fine piece. Not sure where to start? Tell us what the piece is for and Darren will point you the right way within 24 hours.

Why buy fine jewellery direct from the cutter

The case for the cutter over the counter, and over the branded boutique, comes down to four things, value, provenance, control and craft:

• Value built up, not marked up, you pay a wholesale-level stone price referenced to the Rapaport list, plus transparent metal and making, plus VAT, instead of a luxury ticket with a brand premium and showroom rent baked in.
• One custody, fully traceable, the same house buys the rough, cuts it and sets it, so the diamond never leaves a documented chain. The certificate and a written insurance valuation travel with the finished piece.
• Stones matched, not just bought, because we grade on our own bench, we can match a perfect pair of studs, or every stone along a tennis line, within one colour and one clarity grade. A retailer buying stones in rarely matches this closely.
• Solid metal and real standards, every piece is solid 18k gold or platinum, hallmarked for purity, hand-set and finished, never plated, filled or cast-and-imported as costume jewellery is.
• Natural only, GIA primary, Prodiam works in natural, mined-Earth diamonds, certified by GIA or EGL, with GIA the primary laboratory. We will advise fairly on lab-grown, but the natural stone is our craft.

Buying fine jewellery from anywhere in South Africa

We are one studio, in Bedfordview, Johannesburg, but the client base is national. Buyers commission fine and luxury jewellery from Cape Town, Durban, Pretoria, Gqeberha and across the country, and the distance changes nothing about the standard of the piece. The brief and the stone-grade conversation happen by video and WhatsApp, you approve the diamond, the design and the metal, and the finished piece is delivered insured and overnight nationwide via Brink’s or G4S, with its certification and a written valuation included. If you are in Johannesburg, or visiting, you are welcome to view and collect at our Bedfordview studio by appointment, in the building GIA South Africa shares, so the laboratory behind the certificates is, quite literally, next door.

Fine jewellery in South Africa: common questions

Last reviewed: June 2026.