Gold vs Platinum

Choose platinum if you want a white metal that stays white without upkeep, a ring with real weight on the hand, and the firmest hold on a diamond over decades of wear. Choose 18k gold if you love the warmth of yellow or rose, prefer a lighter ring, or would rather put more of the budget into the stone.

Neither is a compromise. Platinum is not a better kind of gold and gold is not a cheaper platinum. They are different materials that age in different ways, and the right one depends on the hand that will wear it.

Platinum used in fine jewellery in the UK is usually 950 platinum: 95% pure, with a small amount of other metals added to make it workable. It is white all the way through.

Pure gold is too soft to hold a stone securely, so it is alloyed with other metals. 18k gold is 75% pure gold, and the metals mixed with it decide the colour: silver and copper for yellow, more copper for rose, and white metals such as palladium for white gold. 14k gold is 58.5% pure gold, a little harder and a little paler in tone.

The numbers stamped inside a ring, 950, 750 and 585, are those purities in parts per thousand. In the UK they form part of the hallmark, which an independent assay office applies after testing the metal.

Platinum is a cool, slightly grey white. White gold is finished with a thin plating of rhodium, which gives it a brighter, more mirror-like white when new. Side by side on the first day, most people find white gold the whiter of the two.

Over time that changes. Rhodium plating gradually wears, fastest on the underside of the band where it rubs against the fingers either side, and the warmer tone of the gold underneath begins to show through. Re-plating restores it. Platinum has no plating to wear away: the colour you buy is the colour you keep.

Yellow and rose gold are never plated. Their colour runs right through the metal, and they simply soften and deepen as they are worn.

This is the part most often misunderstood. Platinum is dense and tough, but it is not scratch-proof. When platinum is scratched, the metal is mostly pushed aside rather than lost, and over months the surface takes on a soft satin finish called a patina. Some people love it. Others have it polished back to a mirror shine.

18k gold scratches too, and when it does, a tiny amount of metal is lost. Over many years of daily wear a gold band thins slightly, and gold claws wear down faster than platinum ones. None of this happens quickly, and regular checks keep on top of it, but it is the reason platinum is so often chosen for the claws that hold a diamond.

14k gold is harder than 18k because it contains more alloy, so it resists everyday scratches a little better, at the cost of some richness of colour.

Platinum is far denser than gold, so the same design made in platinum is noticeably heavier. Some people love that sense of substance on the hand; for them the weight is part of what makes a ring feel precious. Others prefer a ring they forget they are wearing. If you are unsure, try both on before you decide. The difference is obvious within seconds.

For the same design, platinum costs more than 18k gold. It is denser, so a platinum ring uses more metal by weight, and it is harder to cast, set and finish, which adds time at the bench. The difference sits in the metal and the making rather than the stone, so the same budget buys a slightly larger or finer diamond in gold.

If you love yellow gold but want a colourless diamond to stay colourless, there is a middle path: a yellow gold band with white claws around the stone. You keep the warmth on the hand and lose none of the whiteness in the diamond.

Metal reflects into a stone. A colourless diamond in the D to F range looks its whitest in platinum or white gold, because a yellow setting throws warmth back into it. A near-colourless diamond in the G to H range sits happily in either. And a diamond with a hint of warmth can look whiter in yellow gold than in platinum, because the setting makes the colour look intentional.

Coloured stones change the answer again. Emeralds and yellow diamonds glow in yellow gold. Blue sapphires look crisp and cool in platinum. Pink and peach stones are softened beautifully by rose gold. Our gemstone guide covers each stone in detail.

Platinum 950 is very pure and rarely causes a reaction, which makes it the safest choice for sensitive skin. Some white gold alloys contain nickel, which a small number of people react to. If you have a known nickel allergy, say so before anything is made: platinum, or a nickel-free white gold, avoids the problem entirely.

Think about the hand as well as the skin. If you work with your hands, train hard or never take your ring off, platinum’s toughness and its grip on a stone are worth the premium. If the ring will be worn with a little care and you love colour, 18k gold will last a lifetime.

Skin tone advice is a guide rather than a rule. Warm metals tend to flatter warmer skin and white metals cooler skin, but the only test that matters is seeing both on the hand, in daylight.

Where you can, choose your wedding band in the same metal as your engagement ring. Two rings worn side by side rub against each other every day, and a harder metal slowly wears a softer one. Platinum next to platinum, or 18k gold next to 18k gold, wear together evenly.

If you want contrast, a white ring beside a yellow one, it can be done beautifully. Decide before the engagement ring is made, so the two can be designed as a pair.