Advice 1: How to determine a diamond's authenticity

Diamond is always more valuable than other stones. So in search of cheaper alternatives appeared a lot of simulations: cubic Zirconia, rhinestone, moissanite, sapphire, etc. it is usually difficult to understand where the real diamond, and it cheap fake. However, there are several simple ways that will help to dispel or, alternatively, confirm your doubts about the authenticity of a diamond.
Guarantee of authenticity of a diamond can only give expert
You will need
  • magnifier 6-fold increase
Reliable conclusion about the authenticity of the diamond can give the expert laboratory that conducts comprehensive diagnosis of the properties of precious stones. Specialists-gemologists to evaluate the diamond in terms of color, clarity, cut quality, thermal conductivity, fluorescence. In the case of the studied stone is indeed a diamond, it's attached to an expert opinion. This document, the owner of the diamond can retain as proof of its authenticity.
In many cities there is still no Gemological laboratories, but to obtain at least minimal information about the authenticity of a diamond it is possible at home. With a magnifying glass look carefully at the jewelry: real diamond, often embodied in the product so that it is easily viewed at the bottom face. In addition, on the lower faces of the diamond under any circumstances you will not see the mirror coating. Otherwise, the stone is a fake.
Examine the appearance of the stone for any visible chips, pitted faces, the presence of internal inclusions. The diamond is the smallest allowable inclusions, all faces and edges should be smooth, clear, no chips or rough edges.
Please note the stone's sparkle. Diamonds shimmer in all the shades of gray, whereas rainbow glitter should give you an idea about fake.
One of the unique properties of diamond is its high thermal conductivity. Breathe on the stone and immediately examine through a magnifying glass its surface. On the imitations of diamond (glass, quartz, zircon) remain vague traces of a genuine diamond of such traces should not be.
If the counterfeit is of low quality, it is easy to determine by rubbing the stone with sandpaper. Due to the unique hardness of this diamond from this contact will not be over. Similar way of testing – a stone to scratch the glass surface. A fake will not be able to leave her scratches, while diamond can handle this easily.
Loose diamonds, place on a sheet of paper with printed text. Through glass or crystal you can clearly see the letters, and the refraction of light diamond of the text will be indistinguishable. Another similar method: direct a beam of light from a small led light on the stone. If, looking from the opposite side, you will not detect the light beam, and instead will notice a light outline around the edge of the stone, then you have a genuine diamond.
Check for conductivity excellent resistance to such a simulated diamond like moissanite.
It is not recommended to determine the authenticity of a diamond by using a variety of scratching surfaces, because even a genuine stone can get damaged.
Useful advice
When you purchase jewelry or loose diamonds please note the cost of the acquisition. Suspiciously low price – an occasion to reflect on the authenticity of the proposed stone.

Advice 2 : As in house conditions to determine the authenticity of a diamond

Many owners of expensive jewelry turn to professionals to find out the genuine diamonds that they have. However, to answer this question by yourself. You need to do some fairly simple experiments.
As in house conditions to determine the authenticity of a diamond

Fogging stone

One of the simplest ways to check the authenticity of a diamond lies in the definition of its reaction to moisture. Hold the diamond to your mouth and slowly exhale it. If you notice that the stone fog up for a few seconds, most likely a fake diamond. A genuine diamond has the ability to dissipate heat instantly, so blurred it is almost imperceptible. If you'll see this blurred, it disappears much faster than fake diamonds. In addition, if you repeat this experiment several times, on a real diamond, the result is always the same. Fake stone with each new approach will moisten all the more, it produces condensate.


If you check the authenticity of a diamond on jewelry, pay attention to the metal into which it is placed. Earrings, rings and other jewelry with a real diamond is likely to be made of gold, silver or other valuable metal. Armed with a magnifying glass and check the product for presence of a mark on the sample. If available, the probability that a diamond is genuine is very high. At the same time, you may find the inscription CZ (cubic Zirconia), which means that the diamond is of synthetic origin.

Natural defects

Real diamonds usually have an ideal composition. Look closely at it with a magnifying glass. If you see specks of extraneous minerals or small color changes, the probability that a real diamond is very high. Synthetic diamonds are grown in the laboratory, they do not have these defects, because are made in a sterile clean. However, the absence or presence of such defects can not be the determining factor. Even real diamonds can be perfectly clean. Be sure to conduct additional research.


If you have a fairly large stone, you can determine its authenticity by checking its refraction. Pick up a newspaper and look at it through the diamond. If you will be able to read printed text, or at least see him with the big distortions, to be sure, this is a fake diamond. Genuine diamond very strongly refracts the light, so to see anything specific for him is almost impossible, unless prepared in a special way.


Real diamond is a very hard material, it is quite difficult to break. Heat the stone using a small fire for 30 to 40 seconds, then quickly dip it in a glass of cold water. If the stone is made of glass or quartz, it is quickly covered with cracks.
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