How to distinguish the authenticity of rhinestones, how to distinguish the authenticity of diamonds

When many friends buy jewelry, they often hear the word "rhinestone", which probably means imitation diamond. In fact, rhinestone is just a general term for imitation diamonds, and rhinestones have many distinctions. So what exactly is the so-called "rhinestone"?

1. Glass: Fake diamonds ground with glass are easy to distinguish because of its low refractive index, and there is no sparkling color light like real diamonds, which can be seen by people with a little experience. And this "rhinestone" is often used in relatively cheap jewelry.

2. Artificial spinel: It lacks the shimmering colored brilliance of diamonds, and when it is immersed in diiodomethane, its outline will be blurred. The contours of a real diamond are clear.

3. Artificial sapphire: colorless and transparent artificial sapphire can also be used as a substitute for diamond after pondering. But it is almost absent in "diiodomethane", while the edges of a real diamond are dark and very clear.

4. Crystal and topaz: The transparent crystals of these two natural minerals are also similar to diamonds after polishing, but they both lack the brilliant fire of diamonds. And they are both "heterogeneous", while diamonds are "homogeneous" and are easier to distinguish with a polarimeter.

5. Zircon: Before the advent of artificial cubic zirconia, zircon was the best substitute for diamonds. Zircon has a strong birefringence, i.e. it has two refractive indices, and there is a large difference between the two refractive indices.

As a result, a very special optical phenomenon has been produced, when the zircon prismatic gemstone is observed with a magnifying glass, it can be seen from the top surface that there are obvious double shadows on the bottom face and the ridge line. Because diamonds are "homogeneous", there is no double shadow.

6. Cubic zirconia (i.e., "Soviet diamond"): This is the most ideal diamond substitute or counterfeit product first introduced by the former Soviet Union, which is a man-made compound and no natural minerals. Since cubic zirconia is very close to natural diamonds in terms of refractive index, dispersion, etc.

However, it has a lower hardness (a specific gravity that is times that of a diamond, and its thermal conductivity is much lower than that of a diamond, so it can still be accurately distinguished from a diamond by instrumentation.

Now everyone finally understands the concept of "rhinestones", in addition to the glass in "rhinestones" is easier to distinguish, other "rhinestones" are generally the most important thing to look at. In natural light, the brilliance of a diamond is always incomparable to that of a "rhinestone" imitation. It is recommended that when you buy in your daily life, you should not buy it if you are really unsure or buy it under the protection of a certificate issued by a professional and authoritative testing agency.

Many very simple and practical methods have been invented and accumulated for identifying the authenticity of diamonds without instruments, distinguishing real diamonds from man-made diamonds, crystals, glass or zircons.

Identifying the authenticity of a diamond by hand is a method often used by those who are more experienced, and gently touching the crystal surface of the diamond with your fingers will give you a sticky feeling, which is unique to real diamonds. Because diamonds have an affinity for oil, and there will be a very small amount of secreted hand oil on the human fingers, this kind of oil and the crystal surface of the stone are in contact, which will produce a sticky feeling due to the affinity of the diamond to the oil. Naturally, those other materials don't have this special feeling.

However, if the appraiser is inexperienced, it is still difficult to distinguish between real and fake diamonds, so use this method with caution. Using a pencil to identify the authenticity of a diamond is a relatively simple method. This was discovered by a Soviet expert in the past, and this simple method was very popular with the average diamond enthusiast, although it was certainly not absolutely reliable to use a pencil alone.

On the crystal surface of the real diamond, the pencil scratches the place where the pencil does not leave a trace, and if it is not a diamond, but glass, crystal and other materials, it will leave traces on the surface.

In general, the accuracy of this method is high when a diamond is identified by pencil marking. However, when identifying, it should be noted that some old diamond jewelry that has been set should not be soaked with water, because if it is jewelry with copper or silver or other materials as a setting, it is easy to oxidize. In addition, the crystal surface of the diamond should also be protected from contact with oil, dust and objects.

What is Rhinestone?

Rhinestone is a common name, which is mainly crystal glass, is a kind of jewelry accessories obtained by cutting artificial crystal glass into diamond facets, this material is more economical, and at the same time the visual effect has a diamond-like eye-catching feeling. Therefore, it is very popular, rhinestones are generally used in mid-range jewelry designs. Because the world's artificial crystal glass manufacturing place is located on the north and south banks of the Rhine River, it is also called rhinestone.

The most famous Austrian Swarovski diamond produced on the north shore, referred to as the Austrian diamond. It attracts a lot of sunlight and has a good gloss, and the one on the south bank is called the Czech diamond. The sunlight absorbed is not very sufficient, and the luster is not as good as that of the diamond.

Most of our products are Oriac diamonds, and a few are Czech diamonds. Now some pirated manufacturers use domestic kilogram drills, which are made of glass and bargain in kilograms.

Classification of rhinestones: according to the color, it can be divided into: white diamonds, colored diamonds (such as pink, red, blue, etc.), colored diamonds (also in AB diamonds), colored AB diamonds (such as red AB, blue AB, etc.).

According to the shape classification, it can be divided into: ordinary diamonds, special-shaped diamonds, special-shaped diamonds can be divided into diamond-shaped drills (marquis), trapezoidal drills, satellite stones, and bottomless drills.

Facets of rhinestones: The general rhinestone has eight facets, and the back of the rhinestone is plated with a layer of mercury skin. Through the concentration of light on the facets, so that it has a good brightness, the more facets, the better the brightness, Swarovski was the first to discover the crystal glass facets.

1. Observe the appearance: the appearance of the diamond is transparent and has a crystal clear feeling, if it is a fake diamond, the appearance will be dull and gray; 2. Observe the weight: the weight of the diamond is relatively light, if it is a fake diamond, the weight will be heavier; 3. Observe the reflection:

The reflection of a diamond is stronger, while the reflection of a fake diamond is darker; 4. Observe refraction: the refractive index of diamonds is relatively high, while the refractive index of fake diamonds will be relatively low; 5. Observe the thermal conductivity: the thermal conductivity of diamonds is relatively low, while the thermal conductivity of fake diamonds will be relatively high; 6. Observe the hardness:

Diamonds have a higher hardness, while fake diamonds have a lower hardness.

The methods of distinguishing the real from the fake of diamonds include looking at the lines, the fire, and the hardness.

1. Look at the lines.

Place the flat side of the diamond face down on a piece of paper with a lot of text, ensure that there is enough light around it, and no human body or object casts shadows on the diamond, if you can see the words on the paper through the diamond, even if it is very blurry, then the diamond is fake, and the real diamond is not clear.

2. Look at the fire.

You can look at the fire to distinguish the diamond, under the illumination of the light, the fire of the real diamond is shiny and dazzling, which can show a variety of colors of rotten fire, while the fire of the fake diamond is more dull, and the fire looks stiff and unnatural.

3. Look at the hardness.

Real diamonds are the hardest naturally occurring gemstones, and the surface is scratched back and forth with a sharp object without leaving any marks, while the surface of a fake diamond leaves visible marks after being scratched back and forth.

How to care for your diamond

1. Clean regularly.

During the wearing of the diamond, some dirt will accumulate on its surface, and over time, the dirt on the surface of the diamond will accumulate more and more, which will affect the luster of the surface of the diamond. Therefore, regular cleaning of the diamond can maintain the luster of the diamond's surface.

2. Avoid collisions.

When wearing a diamond, avoid bumps. Because diamonds are the hardest gemstones in the world, they are fragile and can break when they are violently impacted from the outside, affecting their original value.

3. Avoid chemicals.

When bathing or swimming, it is advisable to remove the diamond and store it properly. Because bath and swimming water contains a lot of dirt and chemicals, it can cause corrosion on the surface of the diamond, which can cause the surface of the diamond to lose its luster.

Summary. 1. Appearance quality: The internal crystal structure of real diamonds is tight, the structure is uniform, and the surface is flawless, while counterfeit diamonds generally have flaws such as floating points or cracks on the surface.

2. Hardness: Real diamonds have extremely high hardness and can depict lines, while counterfeit diamonds have low hardness and are not easy to depict lines. 3. Refractive index:

The refractive index of a real diamond is, while the refractive index of a counterfeit diamond is generally lower and may be higher. 4. Thermal conductivity: The thermal conductivity of real diamonds is extremely low, while the thermal conductivity of counterfeit diamonds is generally high.

5. X-ray test: In the X-ray test, real diamonds can see the rays emitted at a certain angle, while fake diamonds will not. 6. Specific gravity:

The specific gravity of genuine diamonds is in between, while the specific gravity of counterfeit diamonds is generally lower. 7. Magnetic test: real diamonds are extremely insensitive to magnetic fields, while fake diamonds are generally sensitive to magnetic fields.

8. Abrasion test: use a hard stone to wear the diamond, the real diamond is not worn, and the fake diamond is worn badly.

1. Appearance quality: The internal crystal structure of real diamonds is tight, the structure is uniform, and the surface is flawless, while counterfeit diamonds generally have flaws such as floating points or cracks on the surface. 2. Hardness:

Real diamonds are extremely hard and can depict lines, while counterfeit diamonds are less hard and are not easy to carve. 3. Refractive index: The refractive index of a real diamond or belt is high, while the refractive index of a fake diamond is generally lower and may be higher.

4. Thermal conductivity: The thermal conductivity of real diamonds is extremely low, while the thermal conductivity of counterfeit diamonds is generally high. 5. X-ray test:

In an X-ray test, a real diamond can see the rays emitted at an angle, while a counterfeit diamond does not. 6. Specific gravity: The specific gravity of real diamonds is in between, while the specific gravity of counterfeit diamonds is generally low.

7. Magnetic test: real diamonds are extremely insensitive to magnetic fields, while fake diamonds are generally sensitive to magnetic fields. 8. Abrasion test:

The diamond is worn out with a hard stone, the real diamond is not worn, while the fake diamond is worn badly.

You've done a great job! Can you elaborate on that?

If you want to buy diamonds, it's best to go to the official ***** to buy them.

1.Determine the quality of a U.S. diamond: Check a diamond's clarity, color, cut, weight, and more, and compare its accuracy with GIA (Gemological Institute of America) standards to determine its authenticity.

2.Have a professional gem dealer or appraiser evaluate the diamond: carefully inspect the surface structure of the diamond, check the polish of the stone, examine the internal structure of the stone, and other characteristics of the diamond to determine its authenticity.

3.Experiment with diamonds: When a diamond is placed in hydrochloric or nitric acid, the real diamond is not affected, while the fake diamond reacts to determine whether it is a real diamond or not.

4.Check receipts: Check the diamond's proof of purchase to see if there is any fraud to determine its authenticity.