Tips On How To Identify If A Diamond Is Real Or Fake

If you would like to know if a diamond is in fact a natural and real stone, there are a few tests you are able to conduct at home. These tests can assist you in distinguishing between cubic zirconia (CZ), diamonds and the artificial diamonds like moissanite.


Some of these tests will work better with loose stones. If your stone has failed all of these tests, the in all likelihood your diamond is a fake. If the diamond passes one of more tests, then the stone is probably real. To confirm the authenticity of the stone it is also advisable to take it to a local gemologist or jeweler to obtain a jewelry appraisal that is official. It is often a difficult task to know whether the stone is natural without assistance from a gemologist. For example, a moissanite is classified as a type of diamond stimulant that is just about indistinguishable from real diamonds without professional gemological testing.


  1. The Breath Test

Hold your stone a few inches away from your mouth while you breathe out over the flat surfaces of the stone. Breathe out like you would onto a mirror or window to create a fog. A real diamond instantly dispenses heat, which means the stone would immediately become transparent and not remain cloudy. If you conduct this test on cubic zirconia, the surface of the stone will remain foggy for a while. This is a test that can help you distinguish a cubic zirconia from a diamond, but will not assist you in determining the differences between a diamond and a moissanite.


  1. The Loupe Test

If you already have information about diamonds and you own your own jewelry loupe, this is the type of test that helps you to determine diamonds of a lower grade. The majority of diamonds have a few flaws or inclusions. When examining a stone in adequate lighting under magnification, you might notice white spots that appear like tiny feathers or pieces of tiny carbon. Synthetic diamonds such as moissanite or cubic zirconia are usually internally flawless and will not include these inclusion types.


If there are inclusions present it is usually a good indication that the stone is actually a real diamond. If you are unable to find any flaws, this should not be used as your deciding factor. The diamond-specific inclusions indicate real diamonds. yet there might be a chance that you are examining a diamond that is internally flawless that is free from any inclusions.


  1. The Scratch Test

When using a scratch test, take your stone and attempt to scratch glass using the stone. This test needs to be carried out with care as you may risk chipping or damaging the stone. Diamonds are stones that are ranked as the hardest on what is known as the Mohs scale, which means real diamonds should be able to easily scratch a mirror or glass. If the stone is unable to leave behind a mark, it is more than likely fake. However, if the stone does leave behind a scratch, carry on with a few more tests as a few of the synthetic diamonds are also able to pass this test.


  1. The Newspaper Test

This test usually works better for larger stones. If you use a cubic zirconia over printed newspaper, it should be easy to make out the words beneath the stone. If you use a real diamond, they naturally refract light which means you won’t be able to make out the words below it.


  1. The Water Test

Drop the stone into water. This test only works on loose stones. In relation to different densities, the real diamonds will immediately sink down, while many of the diamond stimulants will usually float.


  1. The Lighter/Candle Test


What You Will Need:


– A glass filled with ice cold water


– A candle flame or lighter


– Tweezers to secure your stone with


Avoid using this test on pieces of jewelry that contain stones. If you have a loose stone secure the stone using tweezers and heat it over a candle flame or lighter for around 45 seconds. Now quickly drop the stone into the ice cold water. Real diamonds will have no reaction to the extreme temperature changes. If the stone is fake, which includes the ones made of quartz, cubic zirconia or glass will shatter or break apart with this test.



If the stone has managed to survive the test, you probably have a real diamond. You will need to cleanse the stone from residual ash caused from the flames. The easiest way would be to soak the stone in a mixture of toothpaste and warm water for a few minutes. Now gently brush the stone with a old toothbrush and rinse thoroughly.


  1. The Conductivity Test

This test will involve taking your stone to a trusted jeweler such as Something that you may not know about real natural diamonds is their ability to resist electricity. Testing loose stones for some type of electric conductivity can be extremely helpful when you are unsure of whether the stone is a moissanite or diamond. Moissanite’s especially when they have been created extremely well are very difficult to distinguish from genuine diamonds, and they usually have a similar thermal conductivity level. However, a relatively simple test that will quickly tell them apart, is the fact that a moissanite conducts electricity while natural diamonds will not. With the popularity of the moissanites in the diamond markets today, most jewelers use electricity testing tools to distinguish the lab created from the authentic diamonds.


If you own a piece of jewelry that you have inherited or have been gifted with and you are not sure about whether it is genuine or not, the above mentioned home tests can help you to determine if you have a real diamond or not. When it comes to finding out if you have an authentic natural diamond, it is always best to confirm the authenticity of the stone with a gemologist or a reliable and trusted jeweler.


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