HOW TO TELL IF A DIAMOND IS REAL
1. THE DIAMOND BREATH TEST
2. THE DIAMOND REFLECTION TEST
A simple method to use is the diamond reflection test. All that is needed is natural sunlight. The way natural diamonds reflect light is unusual: the inside of a real diamond stone should sparkle gray and white, while the outside should mirror a rainbow of colors onto other surfaces. However, a faux diamond will have a rainbow of colors that you can see in the stone's interior.
3. THE DIAMOND IN WATER TEST
The diamond in water test is a quick & simple method for testing diamond stones. Find a glass and fill it ¾ of the way with water. Then, drop your diamond in the water. If the diamond density is high and the sparkler subsides, it's real bling. If it floats underneath or at the water's surface, you have a bogus rock on your hands. A diamond has a high density, so the glass of water experiment shows if your stone matches the standard diamond density level.
4. THE DIAMOND SCRATCH TEST
Did you know that a diamond is one of the strongest substances on earth, making it easy for a true diamond to cut through glass?
Sometimes a diamond scratch test can help you decide if the bling in question is, in fact, a genuine stone. You will need a glass plate and a loose diamond for this test. Take the questionable diamond and scratch the surface of the glass plate. If it successfully scratches the glass, the chances are good that your rock is an authentic stone. It's important to note that scratching the surface of the glass with a diamond could damage your precious gem in the process.
5. THE MICROSCOPE TEST
Another method for testing a diamond is to look at the questionable bling under a microscope. Position the bauble next to a genuine stone and compare the two. All authentic diamonds contain an external or internal flaw, known as a diamond inclusion, in one form or another. Phony diamonds, however, don't have inclusions. If a bauble is too perfect and clear, it is likely a faux diamond.
6. THE BLACKLIGHT TEST
You'll need a black light for this one. Once you get it, switch off the lights in your home and place the diamond beneath a UV light. Then, wait for its reaction and analyze the color it reveals; almost all-natural diamonds will emit a blue-colored glow, but not all of them — some diamonds don't glow beneath UV light.
If you see a faint fluorescent glow in a green, gray, or yellow color instead, this usually means that the questionable gem is not an authentic stone. However, remember that the blacklight test for diamonds is not conclusive, and not all diamonds show a blue hue, so it is better to get a diamond specialist to test the dazzler using their advanced equipment.
7. USE A DIAMOND LOUPE
A diamond loupe is a tiny magnification device jewelers use to see minor details up close. Most jewelers use loupes to examine real diamonds for their class and clarity. While artificial ice is perfectly constructed, a natural diamond will have tiny imperfections called inclusions that appear under a loupe's intense magnification. A natural diamond will also have tiny ridges on the stone's outer surface, called facets.
8. THE NEWSPAPER TEST
If you have a loose diamond, you can use the diamond newspaper test to determine if it is genuine or not. With the flat side down, place the loose diamond in question on a piece of newspaper. It is faux ice if you can read the letters through the loose stone. A true diamond, because of how it refracts light, you will not be able to see straight through it.
Does this only work with a loose stone? The newspaper test works best with a loose stone, but you can also use it with a set diamond. You will need to take the extra step of holding the paper up to the light so you can see through both the setting and the set diamond. If you still can't read the letters, then it is probably a genuine diamond.
9. THE DIAMOND HEAT TEST
For the diamond heat test, place your hand over the candle flame and heat the diamond for about a minute. You should feel no heat, and the diamond should remain cool to the touch. Real diamonds have a higher thermal conductivity than glass, so that they can get hot quickly--but they can't store that heat in their structure. The diamond should not heat up quickly and stay hot if it is real. If it is fake, you will feel the heat almost immediately.
10. THE DIAMOND TESTER
The easiest and most accurate way of testing diamonds at home-aside from bringing them to a certified jeweler—is to purchase a diamond tester. They are usually affordable and deliver quick & reliable results. The process is pretty straightforward for testing diamonds at home: touch the metal probe to the stone and wait for the result. If it's a real diamond, the machine will beep; if it's fake, it won't make a sound. However, remember that some fake diamonds can fool these diamond testers, so it is always best to take your stones to a professional jeweler.
11. THE DIAMOND SCALE
For this diamond testing method, all you will need to determine if your stones are real diamonds is an electronic scale. Authentic diamonds, all carbon, have a unique density of 3.52 grams per cubic centimeter. When placed on a diamond scale, the weight of the stones should match up with authentic diamonds with the equivalent carat weight, color, and clarity grade. If the weight is slightly off, you may be dealing with an imitation stone.
12. THE SOUND TEST
The sound test is not the most accurate diamond testing technique, but it can give you a quick idea of whether or not what you're looking at is real. Natural diamonds have a very distinct sound when tapped with a metal object. For example, if you tap a questionable stone against a glass surface and make a solid, high-pitched chinking noise, it is probably a fake. A real diamond makes a dull thud noise when tapped against glass.
13. EXAMINE THE SETTING
You can typically determine real diamonds by examining the metal quality of the setting.
An authentic diamond is usually set in a premium metal like gold or platinum, so look for an engraving that says 10K, 14K, 18K, 585, 750, 900, 950, PT, or Plat. Real diamonds are a considerable investment, so it is doubtful that a substantially sized diamond's setting is anything other than premium metal.
As you can see, there are a few ways to test to see if a diamond is real. While some diamond testing methods are more reliable than others, it is always best to consult with a certified jeweler to get an expert opinion. With their help, you can ensure that your diamond is the real deal!