What Is White Gold?

White gold is one of jewellery's most successful inventions: the security and workability of gold in a cool, silvery dress. It carries most modern engagement rings and a great deal of Sri Lanka's export sapphire jewellery, yet many owners are surprised to learn that its bright white surface is not the gold itself.

What White Gold Is Made Of

Pure gold is unalterably yellow, so white gold is an exercise in alloying. Starting from the gold content its karat requires, 75% for 18K, metallurgists fill the balance with whitening metals: palladium, nickel, silver and zinc in various recipes. The result is a genuine gold alloy, stamped with the same fineness numbers as yellow gold; the 750 mark means 75% gold whatever the colour.

Alloy families matter to wearers. Nickel whitens powerfully and cheaply but is a known skin sensitiser; palladium-based alloys cost more and sit gentler on sensitive skin. A good jeweller can tell you which family a piece belongs to.

The Rhodium Layer

Even well-whitened gold alloys retain a faintly warm, greyish cast, so nearly all white gold is electroplated with rhodium, a platinum-group metal with a brilliant, hard white surface. The plating is thin, and this is the fact every owner should absorb: rhodium wears. Rings, which take the most friction, can begin showing warmer metal at the shank within a few years of daily wear.

This is not deterioration of the gold. Re-plating is a routine, inexpensive workshop job that restores the original brightness, and owners of white gold should simply budget for it as periodic maintenance.

White Gold, Platinum or Silver?

The three white metals serve different purposes. Platinum is naturally white to its core, denser and more durable in settings, but typically costs more. Sterling silver is far cheaper but soft and prone to tarnish, suiting fashion pieces rather than heirloom gem setting. White gold occupies the commercial middle: strong enough for fine settings, familiar to every workshop and priced off its gold content.

White Gold in Gem-Set Jewellery

Most white gold is 18K or 14K, the purities whose hardness suits precision setting. Cool-toned metal flatters blue and pink sapphires and makes white stones appear whiter, which is why so much of Sri Lanka's export gem jewellery is set this way.

Buying and Caring for White Gold

Check the fineness stamp, have karat and weight written on the invoice, and confirm the alloy family if skin sensitivity matters, the same discipline as any gold purchase, as our guide to gold testing explains. In wear, remove rings for heavy work, keep pieces away from chlorine, and expect to re-plate high-friction items every few years. Treated this way, white gold keeps both its value and its colour for generations.