How to Identify Real and Fake Gold Instantly with These 13 Tips

The luxurious beauty and lasting value of gold have made it a beloved jewelry item. However, the increase of counterfeit gold products on the market has made consumers more cautious. So, what are the ways to identify real gold? In this article, Jemmia Diamond will suggest 13 ways to quickly and accurately identify real gold. Let's take a look!

Types of gold on the market

The current gold market is extremely diverse with many different types of gold, from pure 9999 gold to luxurious 18K gold. Each type of gold possesses unique characteristics in terms of color, hardness, and gold content, meeting the needs and preferences of each individual. Here are the popular types of gold on the market today: 

• Ta gold/9999 gold/24K gold
• 999 gold
• White gold/10K, 14K, 18K white gold.
• Rose gold/10K, 14K, 18K rose gold.
• Western gold/8K, 9K, 10K, 14K, 18K gold.
• Italian gold/750, 925 Italian gold.
• Young gold.
• Gilded gold.

With the rampant spread of fake gold on the market, consumers find it increasingly difficult to distinguish between real gold and low-quality gold. To protect your rights, equipping yourself with knowledge about how to identify real gold is extremely important. Jemmia Diamond invites you to continue reading below. 

The market is very diverse with various types of gold, making it easy to be counterfeited and of poor quality

13 ways to identify real gold, distinguishing popular real gold

Here are 13 ways to identify real gold to help customers confidently choose high-quality real gold products. 

Identify real gold by observing under light

Observing under light is a simple and effective method to distinguish real gold from fake gold. Real gold has a finished surface, without small scratches, tiny dots, or color changes. Conversely, fake gold often has an uneven surface with small white or red spots due to metallic impurities.

Observing under light is a simple and easy method to distinguish real and fake gold at home

How to test gold with fire

You can test real gold with fire using the following simple steps: Cut a small part of the gold item or scratch the surface. Then, apply a flame to that spot. If signs like melting and leaving behind residue appear, it can be confirmed as fake gold. Conversely, real gold will melt but will not leave residue. Note: This method is only suitable for 99.99% gold and may damage or mar the jewelry's appearance. 

Real gold will melt when tested with fire but it does not leave residue like fake gold

Distinguish real and fake gold by markings on the jewelry

One of the simple ways to distinguish real gold from fake gold is to observe the identification marks on the product's surface. Real gold jewelry is often stamped with markings such as gold purity (10K, 18K, 24K) and brand (PNJ, SCJ, Jemmia Diamond…) to prove its quality. Conversely, fake gold often lacks these markings.

Real gold is often stamped with markings for gold purity and brand name on the surface

How to identify by biting the gold firmly

One of the traditional ways to distinguish real gold from fake gold is by biting it. Pure real gold is soft, so biting it firmly will leave tooth marks. Conversely, fake gold is usually harder and does not deform under force.

Pure real gold is soft, so biting it firmly will leave tooth marks

Check real gold by observing its tarnishing

Color stability is one of the prominent physical properties of pure gold. Accordingly, fake gold is often made by plating a thin layer of gold over another metal. Therefore, after a period of use, this plating will peel or wear off, revealing the true color of the underlying metal, which is often white or another color. Pure real gold will not experience this phenomenon.

Pure real gold will not show signs of tarnishing after a long period of use

Identify by checking the gold's weight

One of the methods to identify real gold is by measuring its weight. First, accurately weigh the gold item. Then, measure its volume by immersing it in a graduated cylinder filled with water. The change in water level will indicate the object's volume. Apply the specific density calculation formula as follows: 

• Density = Mass/increase in volume. 

If the density is close to 19g/ml, it is real gold. For example, if the gold weighs 38g and the measured volume increase is 2ml, the density would be calculated as 38/2 = 19g/ml. Therefore, this jewelry is real gold. 

However, this method requires meticulousness and accurate measuring instruments.

A simple way to identify real gold by measuring its weight

How to test real gold with foundation makeup

A simple way to distinguish real gold from fake gold at home is to use foundation makeup. Simply apply a layer of foundation to the back of your hand, let it dry, then gently rub the gold jewelry on it. If a golden streak appears on the foundation, it indicates real gold. Conversely, fake gold usually leaves no mark on foundation.

Distinguish real and fake gold by using foundation makeup

Identify real and fake gold with vinegar

The vinegar test is only suitable for pure gold (99.99%). It is not effective for jewelry with stones, western gold, or pearls. To perform the test, soak the jewelry in vinegar for about 15-30 minutes. If the vinegar turns black, green, or smoky brown, it indicates fake gold. Conversely, if the vinegar does not change color, it is likely real gold.

Soaking gold jewelry in vinegar is a way to identify real gold, however, this method is only suitable for pure gold (99.99%)

How to test gold with a magnet

To test gold with a magnet, simply bring the magnet close to the jewelry. If the magnet attracts it, it is definitely fake gold. This is because real gold is not magnetic, while many types of fake gold contain magnetic metals.

Identify real gold by bringing a magnet close to the gold jewelry

Identify real gold with unglazed porcelain

To test gold with porcelain, you need a piece of unglazed porcelain. Rub the jewelry firmly against the porcelain surface. If it leaves a golden streak, it may be real gold. However, this method is not entirely accurate, especially for gold-plated fake gold. A black streak on the porcelain proves it is definitely fake gold.

Rub the gold jewelry firmly against the unglazed porcelain surface to identify real gold

Identify with aqua regia

Aqua regia is a highly corrosive chemical and should only be used by individuals with professional knowledge. When in contact with real gold, aqua regia will cause a chemical reaction, causing the gold to corrode. This is a sign of identifying real gold. Conversely, fake gold will not react similarly.

Using aqua regia solution to identify real gold

Identify with nitric acid solution

Testing gold with nitric acid is a specialized but very dangerous method. Nitric acid is a strong corrosive substance that can cause skin burns and damage jewelry if not used correctly. When the jewelry is immersed in a nitric acid solution, real gold will not react, while fake gold will typically produce gas and salt, changing the color of the solution. 

Using nitric acid solution is also a way to distinguish real and fake gold

Identify with an electronic gold tester

To ensure high accuracy when testing gold, an electronic gold tester is an indispensable tool. With this device, you can confidently test at home without going to a jewelry store. The measured results are displayed directly on the screen, allowing you to quickly determine the purity of the gold.

Using an electronic gold tester is the most accurate way to identify real gold

Here is a table summarizing the signs that occur when performing the methods to identify real or fake gold: 

With the 13 ways to identify real gold in this article, Jemmia Diamond hopes you have gained a comprehensive and deeper understanding of this issue. By equipping yourself with basic knowledge about gold, you will be more confident in choosing products and avoid buying fake or counterfeit goods. However, to ensure the highest accuracy, combine the above methods with consulting experts or bringing the product to reputable gold stores for appraisal.