How to Instantly Tell Real Gold from Fake with These 13 Tips

The luxurious beauty and lasting value of gold have made it a type of jewelry loved by many people. However, the increase of counterfeit gold products on the market has made consumers more cautious. So what is the way to identify real gold, in this article Jemmia Diamond will suggest 13 quick and accurate ways for you to identify real gold, let’s take a look!

Types of gold on the market

Today’s gold market is extremely diverse with many different types of gold, from pure 9999 gold to luxurious 18K western gold. Each type of gold has its own distinct characteristics in color, hardness, and gold content, meeting the needs and preferences of each person. Below 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/Italian gold 750, 925.
• Low-karat gold.
• Costume gold jewelry.

With counterfeit gold flooding the market, it is becoming increasingly difficult for consumers to distinguish real gold from low-quality gold. To protect your rights, equipping yourself with knowledge on how to identify real gold is extremely important. Jemmia Diamond invites you to continue following the section below. 

The market is very diverse with many types of gold, so they are very easily counterfeited and of poor quality

Suggested 13 common ways to identify real gold and distinguish genuine gold 

Below are 13 ways to identify real gold to help customers confidently choose genuine gold products with guaranteed quality. 

Identify real gold by observing it under light

Observing under light is a simple and effective method to distinguish real gold from fake gold. Real gold has a finished surface, with no scratches, tiny spots, or color changes. In contrast, fake gold often has an uneven surface, with small white or red spots due to metal impurities.

Observing under light is a simple method to distinguish real gold from fake gold, easy to do at home

How to test gold with fire

You can perform a real gold fire test with the following simple steps: Cut a small part of the gold item or make a scratch on the surface. Next, apply a flame to that spot. If signs appear such as the gold melting and leaving residue, it can be confirmed that it is fake gold. Conversely, real gold will also melt but will not leave residue. Note: This method is only suitable for 99.99% gold and may damage or reduce the aesthetics of the jewelry item. 

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

Distinguish real and fake gold by the markings on gold jewelry

One of the simplest ways to distinguish real gold from fake gold is to observe the identification marks on the product surface. Real gold jewelry is often engraved with signs such as gold age/purity (10K, 18K, 24K) and brand names (PNJ, SCJ, Jemmia Diamond…) to prove quality. In contrast, fake gold often does not have these signs.

Real gold is often engraved with symbols indicating gold purity and the brand name on the surface

How to identify by biting the gold hard

One traditional way to distinguish real gold from fake gold is by biting it. Pure real gold is usually soft, so biting it hard will leave teeth marks. In contrast, fake gold is usually harder and does not deform when force is applied.

Pure real gold is usually soft, so biting it hard will leave teeth marks

Check real gold by observing its tarnishing

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

Pure real gold will not show signs of tarnishing after being used for a long time

Identify by checking the weight of gold

One of the ways to identify real gold is the method of measuring gold weight. First, accurately weigh the gold item. Next, measure the volume by immersing the item in a graduated container of water. The difference in water level will indicate the volume of the item. Apply the specific density formula as follows: 

• Density = Mass/Added volume. 

If the resulting density value is close to 19g/ml, then it is real gold. For example, if the gold weighs 38g and the measured increase in volume is 2ml, then the density is calculated as 38/2 = 19g/ml. Therefore, this piece of jewelry is real gold. 

However, this method requires meticulousness and precise measuring tools.

A simple way to identify real gold by measuring the weight of the gold

How to test real gold with foundation makeup

A simple way to distinguish real gold from fake gold at home is to use foundation. You just need to apply a layer of foundation to the back of your hand, let it dry, then gently rub the gold jewelry on it. If a gold streak appears on the foundation, it proves that it is real gold. In contrast, fake gold usually does not leave marks on the foundation.

Distinguish real gold from fake gold by using foundation

Identify real and fake gold using vinegar

The method of testing gold with vinegar is only suitable for pure gold (99.99%). For stone-set jewelry, western gold, or pearls, this method is not effective. To perform it, soak the jewelry in vinegar for about 15–30 minutes. If the vinegar turns black, green, or smoky brown, it proves that it is fake gold. Conversely, if the vinegar does not change color, it is very 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, you just need to bring the magnet close to the jewelry item. If the magnet attracts it, it is definitely fake gold. The reason is that real gold is non-magnetic, while many types of fake gold contain magnetic metals.

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

Identify real gold using unglazed ceramic

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

Rub gold jewelry firmly on an unglazed ceramic surface to identify real gold

Identify using aqua regia

Aqua regia is an extremely corrosive chemical and should only be used by people with professional knowledge. When it comes into contact with real gold, aqua regia will cause a chemical reaction, corroding the gold. This is a sign for identifying real gold. In contrast, fake gold will not have a similar reaction.

Use an aqua regia chemical solution to identify real gold

Identify using nitric acid solution

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

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

Identify using 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 right at home without going to a gold shop. The measurement results are displayed directly on the screen, helping you quickly determine the purity of the gold.

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

Below is a summary table of the signs that occur when applying methods to identify real or fake gold: 

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