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INVESTING IN GOLD

Gold-plated, solid gold, or vermeil: how can you tell them apart? | Guide 2026

When you want to sell a piece of jewelry, one question often arises: is it really solid gold?
There is often confusion between gold-plated, solid gold, and vermeil, and this can greatly influence the value of your jewelry when it is being appraised.

Good news: there are several simple methods for recognizing the true nature of a piece of jewelry. In this guide, our experts explain how to avoid mistakes and know exactly what you own.

Solid gold: what is it really?

A solid gold piece of jewelry is made entirely of real gold.
It is always marked with an official hallmark indicating the carat:

  • 750 → 18K gold (most common in Belgium)
  • 585 → 14K gold
  • 375 → 9K gold

The higher the carat, the more pure gold it contains.
These are the pieces of jewelry that sell for the highest prices.

How can you recognize solid gold?

  • Visible hallmark 750, 585, or 375
  • Uniform color even in areas subject to wear

No color change on edges, clasps, or backs of rings

Gold-plated: please note, this is not solid gold.

Gold-plated jewelry is NOT actually made of gold: it is a metal (copper, brass, steel, etc.) covered with a thin layer of gold, often invisible to the naked eye.

Typical signs of plated jewelry:

  • Hallmarks such as "GP," "GEP," "Plated," "Gold Filled"
  • Wear revealing a copper or silver color
  • Significantly lower initial purchase price
  • Color too yellow or "metallic"

Vermeil: an intermediate case

Vermeil is often confused with solid gold.
It is an object made of solid silver covered with a layer of gold.

Recognizing vermeil:

  • Silver hallmark: 925, Sterling, Minerva head
  • Slight silver tint visible in areas of wear
  • Yellow less vivid than 18K gold

How can you be 100% sure? Professional testing

At our stores, we test your jewelry for free using:

✔️ The touchstone

To check the reactions of the metal with different acids.

✔️ The magnetic test

Gold is never magnetic.

✔️ The spectrometer (precise analysis)

Accurate metal analysis — 100% reliable.

These are the only foolproof methods for distinguishing between gold-plated, solid gold, and vermeil.

Why is it important to make a difference?

Type of jewelrySurrender value
Solid gold💰💰💰 (high)
Vermeil💰
Gold-plated❌ no value

Want to sell gold jewelry in Belgium at the best price?

Good news:

  • We provide free valuations for your jewelry (silver, solid gold).
  • Fast payment at the best price of the day.
  • No obligation.

Key Takeaways

Gold protects your wealth during times of uncertainty.

It retains its value despite inflation.

Diversification enhances your security.

Physical gold gives you complete freedom.

Personalized advice at the branch

In addition to online purchases, our experts are available to meet with you at one of our branches in Belgium to help you with your investment plan: choosing the right investment vehicle, setting a budget, and developing a diversification strategy tailored to your goals.

This consultation is free and requires no commitment. Take advantage of our hands-on experience to invest with confidence, with the same level of transparency as you’d find online.

Frequently Asked Questions

Can I purchase precious metals online or only in person?

L’Agence de l’or offers you complete freedom. You can make your investment directly on our e-commerce website, or visit one of our branches in Belgium to receive in-person advice.

Absolutely. Every bullion bar and investment coin we offer for sale is rigorously inspected and always comes with its official certificate of authenticity, guaranteeing its purity and provenance.

What documents do I need to provide to buy or sell gold?

For any financial transaction involving precious metals, the law requires an identity verification process known as KYC (Know Your Customer). Whether you’re confirming an online payment or selling an item in a store, you’ll be asked to provide a valid form of identification to ensure the transaction is secure.

Yes, if you'd prefer to avoid shipping, you can select "pick up in store" when you place your order. Your order will be prepared and made available securely at the location of your choice.