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Does Gold Testing Damage Your Jewellery? Here’s What You Should Know

Apr 27, 2026

If you’ve ever considered having your gold jewellery tested, you may have heard about the “scratch test” and wondered if it could damage your piece. It’s a fair question, especially when dealing with items that may hold both financial and sentimental value. A scratch test performed by a trained precious metal analyst is the equivalent of two weeks of wear to a piece of jewellery.

The reality is that some traditional testing methods can leave a mark. But when done professionally, and with the right tools, your jewellery can be evaluated safely, accurately, and with minimal to no impact on its condition.


Closeup of touchstone acid jewellery test


Understanding the Scratch Test


The acid scratch test is one of the most common methods used to determine gold purity. It involves gently rubbing a small part of the item against a testing stone to create a faint streak. Acid is then applied to that streak, not directly to the jewellery, to assess how the metal reacts.

While this method is considered reliable, it is technically invasive. A very small amount of metal is removed during the process, and in some cases, a tiny mark may remain. If done improperly, such as applying acid directly onto the jewellery, it can cause staining, discolouration, or surface damage.

This is why the way the test is performed matters just as much as the test itself.


How Canada Gold Protects Your Jewellery


At Canada Gold, the goal is simple: provide accurate evaluations without compromising the integrity of your items. Their testing process is designed to be as non-destructive as possible, while still delivering precise results.

All evaluations are performed in front of you, so you can see exactly how your jewellery is handled and understand each step along the way.


XRF machine, density machine and cash counter


Here’s how they do it:


Touchstone Testing (Done Properly)

When a scratch test is needed, it is done carefully on a smooth testing stone, not directly on your jewellery. The mark is typically taken from a discreet area, such as the inside of a ring, and the acid is applied only to the streak on the stone. This minimizes any visible impact.


XRF (X-Ray Fluorescence) Technology

For high-value, delicate, or intricate pieces, Canada Gold often uses XRF analysis. This is a completely non-invasive method that uses low-level X-rays to determine the exact composition of your jewellery.

In just seconds, it can provide a detailed breakdown of the metals present, without scratching, filing, or applying chemicals. This makes it ideal for heirloom pieces, designer jewellery, or items with gemstones.


Specific Gravity Testing

Another non-destructive method involves measuring the density of the item using water. This helps verify gold content without causing any physical change to the piece.


Magnet Testing

As a first step, a high-powered magnet is used to quickly identify non-precious metals. This method is safe and does not affect your jewellery in any way.


Why Professional Testing Matters


Gold-plated items, delicate settings, or jewellery with sentimental value require extra care. Improper testing can affect appearance and, in some cases, reduce resale value.

That’s why working with experienced professionals makes a difference. At Canada Gold, trained appraisers use the appropriate method based on the item in front of them. For example, plated pieces or fragile jewellery are typically tested using non-invasive tools like XRF to avoid unnecessary contact.


Precious metals analyst performing tests on jewellery


Transparent, No-Pressure Evaluations


One of the most important parts of the process is transparency. Every test is done in your presence, and the team explains what they are doing and why. This gives you full confidence in how your jewellery is being evaluated.

All testing is free, with no obligation to sell. If you decide not to proceed, your items remain in the same condition as when you brought them in.


A Smarter Way to Understand Your Jewellery


Gold testing does not have to come at the expense of your jewellery’s condition. With the right approach and modern technology, it is possible to get accurate results while preserving the integrity of your pieces.

Whether you’re curious about value, considering selling, or simply want clarity, Canada Gold offers a professional, careful, and transparent way to understand exactly what you have.

Visit canadagold.ca or stop by one of our locations to learn more.

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