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Encyclopedia · Metals & purity

Yellow gold

By Diamond BrosUpdated 5 min read

What is yellow gold made of?

Pure gold is too soft for most jewellery, so it is alloyed. Mixing other metals into 24 carat gold makes the metal more durable and can also change its colour. Yellow gold uses mostly silver and copper, with the share of each setting the shade. The usual additions are copper, silver and zinc.

Typical recipes show how the mix changes with karat. They are examples, not the only way to reach a yellow, so alloys vary a little between makers.

Typical yellow gold alloys (per cent by weight, World Gold Council examples)
KaratGoldSilverCopperZinc
10K41.7%52%6.3%none listed
14K58.3%30%11.7%none listed
18K75%15%10%none listed
22K91.7%5%2%1.3%

How does karat change the colour of yellow gold?

Two things move the shade. The first is how much gold is in the piece, because the more gold, the more the metal takes on gold's own yellow and the less the alloying metals pull it away. That is why 18K gold usually looks deeper and warmer than 14K gold, and why karat is worth asking about.

The second is the silver-to-copper balance. Copper moves gold's colour towards pink and red, while silver bleaches it towards white and gives the yellow a greenish hue. So a yellow with extra silver is paler and a yellow with extra copper is warmer. Because both karat and recipe matter, "yellow gold" covers a range of shades, and the only reliable test is to see the piece in the light you will wear it in.

Does yellow gold need plating?

Not for its colour. Plating is usually done to white gold, where a thin rhodium layer brightens the surface. In yellow gold the colour comes from the alloy itself, not from a surface layer. Gold does not react with oxygen, so the gold in the mix does not tarnish, and yellow and rose gold typically need less frequent upkeep than white gold.

What you should watch for is not yellow gold fading but something else being sold as yellow gold. Plated and filled items carry their own marks in Canada, such as gold plated or rolled gold plate, and the Competition Bureau treats marking plated jewellery as solid gold as a major infraction. Solid yellow gold is stamped with a karat or a decimal mark such as 14K or 583, and the quality marks entry explains what to look for.

Which diamonds suit a yellow gold setting?

The American Gem Society says that a diamond set in a yellow-gold ring could appear less yellowish in tone than the same stone in a white-metal mounting, and that graders look at stones loose so the metal cannot influence the grade. The report describes the bare diamond, not how it will look in your ring.

That gives yellow gold some freedom. A stone a grade or so warmer on the colour scale may look less yellowish in yellow gold, which can free budget for cut or size. If you want a very white look, ask to see the stone in the actual metal, because the metal beside it changes what you see. By the same logic, white gold and platinum show a diamond's own tint more plainly.

Is yellow gold a good choice for rings and chains?

It is the classic choice, and as of 2026 it is still the most popular gold colour even as the palette widens. Its practical strength is that the colour runs through the metal. Its trade-off is that it is gold-coloured, so if you want a cool, silvery look, white gold or platinum come closer.

In heavier pieces such as a Cuban link chain, the karat affects gold content, colour and wear together. The necklaces and bracelets collections are places to start looking, and when you design a piece, tell the jeweller the karat and the shade you have in mind.

Key takeaways

  • Yellow gold is gold alloyed mainly with silver and copper; the karat sets the gold share (14K is 58.3%, 18K is 75%).
  • More gold usually means a deeper, warmer yellow, and the silver-to-copper balance moves the shade further.
  • The colour runs through the alloy, so yellow gold does not need plating to look yellow.
  • A yellow gold setting can make a diamond look less yellowish than a white metal does, which gives you room on colour grade.
  • Plated or filled items are not solid yellow gold and have their own marks in Canada.

Common questions

Is yellow gold real gold?

Yes. Yellow gold is a real gold alloy. A 14K piece is 58.3% gold and an 18K piece is 75%, and the remaining metals, mostly silver and copper, are what make it strong enough to wear every day.

Is yellow gold better than white gold?

Neither is better in general. Yellow gold gets its colour from the alloy, so nothing wears off the surface. White gold is usually rhodium plated for brightness, and that thin layer wears. Some white gold alloys contain nickel, which matters if you have a nickel allergy. Choose for the look you want.

What is the difference between yellow gold and gold-plated?

Solid yellow gold is gold alloy all the way through. Gold-plated pieces have a thin layer of gold over another metal. Canada's marking rules give plated and filled items their own descriptions, such as gold plated and rolled gold plate, and it is an offence under the Precious Metals Marking Act to mark them as solid gold.

Does yellow gold look different in different karats?

Slightly. Higher karats contain more gold and generally look deeper and warmer, while a lower karat with more silver can look paler. The exact recipe changes the shade as much as the karat, so compare real pieces under the same light.

Sources

  1. Gold jewellery: colour, carat and purityWorld Gold Council · gold.org
  2. Buying guide for white, yellow and rose gold engagement ringsGIA · 4cs.gia.edu
  3. Jewellery alloys: past, present and futureC. W. Corti, COReGOLD Technology (hosted by Assay Office London) · assayofficelondon.co.uk
  4. Understanding diamond colour and clarity: the 4CsAmerican Gem Society · americangemsociety.org
  5. Guide to the Precious Metals Marking Act and RegulationsCompetition Bureau Canada · competition-bureau.canada.ca
  6. Precious Metals Marking Regulations (C.R.C., c. 1303)Justice Laws Website, Government of Canada · laws-lois.justice.gc.ca
  7. Jewellery inspection blitz results in correction of false gold claimsCompetition Bureau Canada · canada.ca

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