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18ct Solid Gold vs. Gold Plated & Vermeil

18ct Solid Gold vs. Gold Plated & Vermeil

A gold plated necklace costs £25. An 18ct solid gold chain costs £75. On paper the plated piece looks like the smarter buy. Two years later the plated one is in a drawer with grey patches on the clasp, and the solid gold one still looks like it did on day one.

That is the whole argument in one sentence, but it is worth understanding why, because the jewellery trade uses three words that sound similar and mean very different things.

Plated, Vermeil and Solid: What You Are Actually Buying

These terms are not marketing fluff. Each describes a different physical construction, and each behaves differently on your skin.

TypeWhat it isTypical priceLifespan
Gold platedBase metal with a microscopic gold layer, often under 0.5 microns£15 to £40Months to 2 years
Gold vermeilSterling silver base with at least 2.5 microns of gold£40 to £1202 to 5 years
18ct solid gold75% pure gold all the way through, no base metal£35 and up at AndaluzDecades

Vermeil is genuinely better than plating. It uses a precious metal base and a legally defined minimum thickness. But it is still a coating. Once that 2.5 micron layer wears through, there is silver underneath, not gold.

18ct solid gold is not a coating at all. The metal is gold throughout its full thickness, so there is no layer to wear away.

Why Plated Jewellery Turns Your Skin Green

That green mark is not an allergy to gold. It is a reaction between acids in your skin and the copper in the base metal, and it happens once the plating has worn thin enough to expose what is underneath.

Solid gold cannot do this, because there is no copper or brass core to react with. And 18ct gold at 75% purity is gentle enough for almost every wearer, including people who react badly to cheap fashion jewellery.

If a piece has ever left a green ring on your wrist, you were not reacting to gold. You were reacting to the metal pretending to be gold.

Does Solid Gold Tarnish?

No, and this is the point most people miss.

Gold is one of the least reactive metals used in jewellery. It does not oxidise, it does not rust, and it does not blacken. A solid gold chain worn daily will look the same in ten years as it does today, apart from minor scuffs from normal wear.

Plated pieces cannot make that promise, because the part that looks like gold is a layer measured in microns.

Why We Can Sell 18ct Gold Under £100

A high street jeweller has rent on a shopping centre unit, a staff rota, a display case and insurance on the stock. Those costs are real, and they end up in the price tag.

Andaluz sells direct. No shop floor, no middleman, no markup stacked on markup.

Our affordable 18ct solid gold chains start at £75 for a full necklace including a 24ct pure gold pendant. That is not a promotional price. It is simply what the piece costs when nobody in the chain needs a shopfront.

What To Check Before You Buy Solid Gold Online

A few practical checks will save you from paying solid gold prices for plated goods.

  • •Look for a hallmark. UK law requires independent hallmarking on gold above 1 gram. A 750 mark means 18ct, 999 means 24ct.
  • •Read the material wording precisely. "18ct gold plated" and "18ct solid gold" differ by one word and by everything that matters.
  • •Check the specification, not the headline. A listing that says "gold necklace" may still be vermeil. Look for the purity stated in the product details.
  • •Ask about a certificate. A reputable seller will state the purity and stand behind it in writing.

Our pure 24ct gold pendants under £100 are hallmarked and ship with a certificate of authenticity for exactly this reason.

The Honest Comparison

If you want a piece you wear twice and replace, plated is fine. If you want something you keep, solid gold is cheaper over time, because you buy it once.

A £75 solid gold necklace that lasts twenty years costs £3.75 a year. A £25 plated necklace replaced every 18 months costs £16.67 a year, and you never actually own anything.

That is the value case for real gold under £100, and it is not a close call.