Authenticity Check: 5 Tips on Identifying Diamond Simulants

Simulated diamonds are popular alternatives to diamonds since they can mimic the properties of the real thing. It’s an excellent way to subtly pull off a lavish look on a piece of jewellery without the manufacturer spending more than they would with actual diamonds. Although they're pretty enough to wear, they're not always worth the same value as actual diamonds. 

Knowing what you’re dealing with

Diamond simulants are also a class of precious stones themselves, including zircon, moissanite, synthetic garnet, white sapphire and more. Although they can display similar qualities with diamonds, they hardly compare in terms of value with actual diamonds. This is why it’s necessary to be extra cautious when you’re in the business of trading jewellery. Thankfully, the tell-tale signs that a diamond simulant will be easier to spot if you know what to look for.

In this article, we’ll share three tips on how to identify diamond simulants.

1. Identify flawless shapes and cuts

Contrary to what its popularity will lead you to believe, diamonds in the rough aren’t pristine materials. Although it’s not visible to the naked eye, you can identify flaws and imperfections through a loupe or microscope. On the other hand, simulated diamonds often have little to no defects, especially for those created artificially.

2. Do a scratch test

Diamond can be chipped and broken down with the right tools to fit and form particular shapes. However, it’s not easy to damage by scratching since it’s one of the most durable materials on earth. In contrast, simulated diamonds are prone to damage from scratching, depending on how soft their surfaces are. Performing a scratch test will confirm whether you have the real thing. If the jewellery you’re holding already has scratches, then that’s even more reason to confirm that it’s a simulant.

3. Perform a breath test

Besides a diamond’s hardness, it also has other qualities that can confirm its authenticity. Authentic diamond tends to dissipate heat quickly, allowing moisture to fade away rapidly. Performing a breath test on the stone’s surfaces will reveal a simulant diamond if it retains moisture.

4. Test its sparkle

Although real diamonds glitter when flashed by light, it’s not to an excessive extent. Simulated diamonds tend to refract light in a much wider spectrum, causing colourful flashes of light. It takes an experienced person to identify the distinct way the precious stone reacts to light. However, it can help to compare one material with the real thing to see if it responds similarly or not.

5. Confirm its price

Sellers of diamond simulants will always low-ball their prices. Since simulants are cheaper than authentic diamonds, they need to ensure that they’re giving you the right value for their true cost. To illustrate, a well-cut diamond with one carat should cost around a couple thousand dollars. If a seller’s starting price is in the hundreds, it’s most likely that they’re selling fakes.


If you don’t want to get unwillingly cheated by low-value faux diamonds, you need to be familiar with identifying the real thing. Sellers of diamond simulants don’t always know that they’re not selling authentic diamonds. Being cautious about dealing with precious metals and gold is necessary to get the right value for your money. This is why it’s best to look for a safe and reliable platform to trade goods online.

Here at London Gold Centre, We ensure our clients that they're safe when trading through our platform by offering free testing and same day payment for their deals. If you plan to buy and sell diamond jewellery in the UK, sign up with us today!

Leave a Comment

Your email address will not be published. Required fields are marked *