White gold engagement rings, made to order in South Africa.

What white gold actually is

White gold is pure gold alloyed with white metals to mute its natural yellow colour and make it hard enough for daily wear. The grade we cast for engagement rings is 18k, which is 75 per cent pure gold by weight, with the remaining quarter made up of white alloying metals such as palladium and silver alongside nickel-free hardeners. That alloy matters, because pure 24k gold is far too soft to hold a diamond securely in a ring worn every day; the white metals give the band its strength as well as its paler colour. South African and international hallmarking both recognise 18k as a premium standard for fine jewellery, which is why we build engagement rings to it rather than to a lower-karat, higher-alloy mix.

There is one more step, and it is the part most people do not realise. The 18k white gold alloy on its own is a soft, very faintly warm white, not the icy bright white you see in a finished ring. To reach that crisp, mirror-white look, the ring is plated with rhodium, a hard, naturally white metal from the platinum family. Rhodium plating is what gives white gold its signature brightness, and it is also the one thing the metal asks for in return over the years, which we come back to below. Prodiam casts engagement rings in 18k white gold, and works platinum, palladium and 18k yellow and rose gold on the same Bedfordview bench, so we can show you a stone against each before you choose.

Why a white metal flatters a colourless diamond

The metal a diamond sits in changes how its colour reads, which is the single best reason to choose white gold for a colourless to near-colourless stone. A diamond graded high on the GIA colour scale, roughly D through H, looks its whitest and brightest when nothing warm sits behind it. A cool white setting disappears around the stone and lets the diamond read as pure white, where a yellow setting can lend a faint warm cast to even a high-colour stone. So if your priority is an icy, modern, high-contrast look, where the diamond is unmistakably the brightest thing on the hand, white gold (or platinum) is the metal that delivers it.

The relationship runs the other way too. A warm metal such as yellow or rose gold can flatter a stone carrying a faint tint, a lower colour grade, because the warmth of the setting makes that hint of colour look deliberate and harmonious rather than like an off-white diamond. This is worth weighing against your budget: pairing a near-colourless stone with white gold keeps the crisp look, while a faintly tinted stone in a warm setting can be quietly excellent value. We set this out in plain language in the 4Cs of diamond grading, and we will show you the actual stone against both a white and a warm metal before you settle on either.

White gold versus platinum, the honest comparison

White gold and platinum are the two white metals we are asked for most, and they look very alike on the day. The differences are real but subtle, and none of them makes one metal simply better than the other; the right choice depends on the wearer and how the ring will be lived in. The table below lays out where they part ways.

In short, white gold gives you the bright white look at a more accessible price, with re-plating as the trade-off; platinum gives you a metal that is white forever and develops a lived-in patina, at a higher cost and a heavier feel. Many clients choose white gold for exactly the look they want now and are perfectly happy with the periodic re-plate; others prefer platinum precisely so they never think about it again. Both are made to order on our bench, and the same GIA-certified centre stone can go into either.

Rhodium re-plating, the one care fact to know

Because rhodium plating is what gives white gold its brightest finish, and because plating is a thin surface layer, a white gold engagement ring will need re-plating from time to time, typically every couple of years, though it depends entirely on wear. A ring on a working hand will show it sooner than one worn lightly. You will notice the change as a faint warm or slightly yellowish cast creeping in, usually first on the underside of the band and at the shoulders where it rubs against the next finger. This is completely normal and not a fault in the ring; it is simply the rhodium wearing thin and the 18k alloy showing through.

Re-plating is a routine, inexpensive bench job: the ring is cleaned, the old plating removed, and a fresh, even coat of rhodium applied, which returns it to a bright white finish that looks new again. It is also the ideal moment to have the claws holding your diamond checked and tightened, so a re-plate doubles as a service. Think of it as the modest upkeep that comes with white gold’s bright look and accessible price, in the way that platinum asks for an occasional polish instead. We handle re-plating, resizing and claw checks on our own bench through our resizing and repair service, so the ring stays cared for by the people who made it.

Settings that suit white gold

White gold flatters almost every engagement-ring setting, and its bright, even tone is particularly kind to designs that use small accent diamonds, since the metal seems to vanish and the stones do the work. These are the styles we are asked for most in white gold.

• Solitaire, the centre diamond alone in a four- or six-claw head, the purest way to show a stone. A white gold band keeps the focus entirely on the diamond, and is the classic solitaire engagement ring.
• Halo, a frame of pavé diamonds encircling the centre, so a stone reads larger and catches more light. White gold makes the halo and centre read as one continuous field of brilliance, which is why so many halo engagement rings are made in it.
• Three-stone, a centre flanked by two side diamonds, carrying its own meaning of past, present and future. A white setting keeps all three stones reading bright and matched.
• Pavé and channel shoulders, small diamonds set into the band itself to run light along the finger. White gold is the natural backdrop for this, since the metal between the stones all but disappears.

Whatever the setting, the shape of the centre stone is the other half of the decision. White gold suits every cut, from a brilliant round to a step-cut emerald; compare them on the diamond shapes page, and remember that cut quality governs how alive the stone looks far more than the metal around it.

How a white gold ring is made to order

1. 01

   Brief

   Tell us the centre-stone shape and carat, the colour and clarity range, the setting style, the finger size, your budget and your deadline, and that you would like it in white gold. We respond within 24 hours, in person, by video or on WhatsApp.

2. 02

   Stone & quote

   We cut or match the centre diamond at Procut DCW to GIA Excellent cut grade, supply its GIA report, and quote a firm ZAR figure, excl. VAT, against the stone, the white gold and the make, before any work begins.

3. 03

   Design & sign-off

   The setting is drawn up, by CAD render where helpful, and adjusted until you are happy. Any halo or pavé stones are calibrated on the bench to sit true around the centre.

4. 04

   Cast, set & finish

   The ring is cast in 18k white gold, the diamond is set at the bench, the piece is hand-polished, then rhodium-plated to its bright white finish and checked under loupe and microscope.

5. 05

   Hand-over

   Presentation at the Bedfordview studio by appointment, or insured overnight courier nationwide via Brink’s or G4S. GIA or EGL certification and a written insurance valuation are included.

Prefer a warmer metal, or still weighing your options? White gold is one route through our wider engagement ring guide, which sets out every shape, setting and step in one place, and it sits alongside the rest of our diamond ring work. For a fully bespoke commission from a blank page, see how the custom engagement-ring process runs end to end. When you are ready, tell us what the ring is for and Darren will come back within 24 hours.

How a white gold engagement ring is priced in South Africa

There is no single price for a white gold engagement ring, because the ring is built around a diamond and the diamond sets most of the cost. The trade prices every polished stone against the Rapaport list, an international wholesale benchmark quoted in US dollars per carat for each colour-and-clarity combination at each size; a stone then trades at a discount to that list for its exact make, the rand-dollar rate of the day converts it, and 15% VAT is added. The white gold itself is priced on the metal weight the design uses, and the making on top. Because we cut the diamond in-house, the importer-and-wholesaler markup is simply not in your price; you pay a wholesale-direct, Rapaport-referenced level for the same GIA-certified specification a retail counter would mark up. The only honest figure is one quoted for your exact stone and design, so we show live, fully-landed ZAR prices on real GIA-certified diamonds and then quote your chosen ring firm in writing before any work begins.

White gold engagement rings: common questions

Last reviewed: June 2026.