Yellow Gold, White gold, Rose gold, Platinum : A buyers guide to precious metals

Choosing a piece of fine jewellery — an engagement ring, a wedding band, a special-occasion gift — usually starts with a stone or a style. But the metal matters just as much. It shapes the colour, the price, how the piece wears over the years, and how much upkeep it will ask of you down the track.

Yellow gold, white gold, and platinum are the three most common choices, and while they can look surprisingly similar in a display case, they behave quite differently on your finger. Here's what sets them apart.

A quick word on how gold is measured

Before comparing the metals, it helps to understand Carat (ct).

Pure gold is 24ct, but in its pure form it's too soft for everyday jewellery — it bends, scratches, and loses shape easily. To make it durable, gold is mixed with other metals to form an alloy. The Carat number tells you how much pure gold is in the mix:

• 24ct — 99.9% pure gold (rarely used for rings)
• 18ct — 75% pure gold
• 14ct — 58.3% pure gold
• 9ct — 37.5% pure gold

In Australia, 9ct and 18ct are the two most common standards. Higher carat means richer colour and more value, but also a softer metal; lower karat is harder-wearing and more affordable, but the colour is less intense.

This matters because both yellow gold and white gold are made from this same base — the difference is which metals get mixed in.

Yellow Gold

Yellow gold is the classic. It's the colour most people picture when they think of gold, and it has a warm, timeless appeal that suits vintage and antique styles beautifully.

What it's made of: Pure gold blended with metals like copper and silver (and sometimes zinc). Copper deepens the warm tone; silver softens it. The result keeps that recognisable golden colour while adding the strength gold needs to survive daily wear.

The big advantages:

• The colour is permanent. Because the warm tone runs all the way through the metal, yellow gold never needs re-plating or colour restoration. A polish now and then keeps it looking its best.
• Low maintenance. Aside from the occasional clean and polish, it largely looks after itself.
• Flattering and versatile. It tends to complement warmer skin tones especially well and pairs naturally with warm-hued gemstones.

Rose Gold

Rose gold has a warm, romantic pink hue that's become enormously popular in recent years. It carries a slightly vintage, distinctive character while still feeling modern, and it flatters just about every skin tone.

What it's made of: The same pure-gold base again, but alloyed with a higher proportion of copper — and it's the copper that creates the pink blush. The more copper in the mix, the deeper and redder the colour, which is why you'll sometimes see softer "rose," warmer "pink," and richer "red" gold depending on the recipe. A touch of silver is often added to fine-tune the shade. Because an 18ct rose gold still contains 75% pure gold, the pink is quite delicate; 9ct versions, with more room for copper, can appear a little rosier.

The big advantages:

• The colour is permanent. Like yellow gold, the hue runs right through the metal, so rose gold never needs plating or re-plating.
• Distinctive and flattering. Its warm tone suits nearly everyone and pairs beautifully with both white and coloured stones.

White Gold

White gold offers the bright, cool, contemporary look of a silvery metal at a more accessible price than platinum. It's a hugely popular choice for engagement rings.

What it's made of: The same pure-gold base as yellow gold, but alloyed with white metals to neutralise the yellow. Traditionally this meant nickel, though palladium is increasingly used as a premium, skin-friendly alternative. Silver and zinc often feature too.

The rhodium plating point: This is the key thing to understand about white gold. On its own, white gold isn't a pure bright white — it carries a faint warm or greyish tint, because there's still yellow gold underneath. To achieve that crisp, mirror-bright white finish, jewellers coat the piece in rhodium, a rare, brilliant-white precious metal from the platinum family. 

The catch: rhodium plating wears off. Depending on how often the piece is worn and how it's treated, the coating typically lasts around one year until the warmer tone starts to show through, particularly on rings that take daily knocks. Restoring the finish means having the piece re-plated, which is an ongoing (if modest) cost over the life of the jewellery.

Platinum

Platinum is the premium choice — a naturally white, dense, and remarkably durable metal that's prized for heirloom-quality pieces.

What it's made of: Unlike gold, platinum is used in a much purer form in jewellery — commonly around 95% pure (marked "950"). It doesn't need much alloying because it's naturally strong enough to wear well.

The big advantages:

• Naturally white, forever. Platinum's cool white colour is genuine and permanent — no rhodium plating, no re-plating, no colour that fades. This is its standout advantage over white gold.
• Hypoallergenic. Its purity and lack of common allergens make it an excellent option for sensitive skin.
• Exceptionally durable in the ways that matter. Platinum is denser and heavier than gold, giving pieces a substantial, quality feel. Crucially, when platinum is scratched, the metal displaces rather than wearing away — so prongs and settings hold gemstones securely for decades. This makes it a favourite for pieces meant to last a lifetime.