Jewelry without a hallmark: is it valuable?

When you want to sell a piece of gold jewelry, one detail often comes up: the hallmark.
This small symbol indicates the metal’s purity: 750 (18K), 585 (14K), 375 (9K), etc.

But then, what about jewelry that has any hallmark? Is it still valuable?
The answer is: yes, sometimes, but it depends on several factors.

In this article, our experts at Agence de l’Or explain everything.

Why doesn't some jewelry have a hallmark?

There are several reasons:

• Antique jewelry made before hallmarking became mandatory
• Imports from countries that do not use the same standards
• Handcrafted jewelry made by a small designer
• Wear and tear: The stamp may become worn over time
• Repair or resizing that has erased the marking
• Or… simply a piece of jewelry that isn’t made of gold

That is why jewelry without a hallmark is not automatically a fake, but requires professional verification.

Can a piece of jewelry without a hallmark be made of gold?

Yes!
It’s not uncommon to come across jewelry that’s actually made of gold but has no visible markings.

However, the absence of a hallmark makes it impossible to verify authenticity by sight alone, which is why testing is so important.

How can you verify the authenticity of jewelry without a hallmark?

At Agence de l’Or, we appraise your jewelry using professional and quick tests:

✔️ Touchstone test

It allows the actual purity of the metal to be determined using various acids.

✔️ Spectrometer analysis (precise analysis)

A high-precision machine that determines the exact composition of the jewelry.
→ 100% reliable.

✔️ Magnetic test

Gold is a non-ferrous metal, so it is never magnetic.
However, be careful: ➡ Jewelry that isn’t magnetic isn’t necessarily made of gold.
Other non-precious metals are also non-magnetic.

Can a piece of jewelry without a hallmark be valuable?

Yes, if it is genuine gold, it will be bought back in the same way as hallmarked jewelry:
→ by weight
→ based on the actual purity of the metal
→ at current market price

However:
❌ If it is gold-plated jewelry
❌ Or a gold-colored metal with no value
It cannot be bought back as gold.

Jewelry without a hallmark is often… a pleasant surprise!

Many people think that their “unmarked” jewelry is worthless…
As a result, they leave it sitting in a box for years.

However, we very often encounter:

• rings made of genuine 18K gold
  
• vintage earrings
  
• gold necklaces

The only way to find out is to bring them in for a free analysis.

At Agence de l’Or, we provide free appraisals of your jewelry, whether it’s hallmarked or not

Do you have a piece of jewelry without a hallmark?
→ Stop by one of our locations:

• Braine-l'Alleud
• Wavre
• Wavre Center
• Saint-Pierre-Woluwe
• Rixensart
• La Louvière
• Charleroi
• Uccle

We'll test it right in front of you:
✔ Free of charge
✔ Fast
✔ No obligation
✔ At today's best price if you want to sell

Jewelry without a hallmark can be worth a lot: have it appraised!

The absence of a hallmark does not mean the item is worthless or that it is guaranteed to be gold.
Only a professional analysis can confirm the actual purity of the jewelry.

At Agence de l’Or, we offer you a detailed, free appraisal to help you avoid unpleasant surprises… or to reveal a pleasant one!

Come see us and find out what your jewelry is really worth.