People have invented and accumulated many very simple and practical methods to distinguish real diamonds from synthetic diamonds, crystals, glass or zircon without instruments.

It is often used by those who are more experienced to identify the authenticity of diamonds through manual models. Touching the crystal face of a diamond with your fingers will give you a sticky feeling, which is unique to real diamonds. Because diamonds have affinity for oil, and there is a trace of hand oil secreted from human finger skin, this skin oil will feel sticky when it comes into contact with the crystal face of the stone because of the affinity of diamonds for oil. And those other materials naturally don't have this special feeling. However, if the appraiser is inexperienced, it is still difficult to distinguish between genuine and fake diamonds, so this method should be used with caution. It is a relatively simple method to identify the authenticity of diamonds with a pencil. This was discovered by a Soviet expert before. This simple method is very popular with ordinary diamond lovers. Of course, it is definitely not absolutely reliable to use only a pencil to identify.

When identifying, you need to wet the diamond with water first, and then carve it gently with a pencil. On the crystal face of a real diamond, there is no trace where the pencil crosses, but if it is not a diamond, but a material such as glass and crystal, it will leave traces on the surface.

Generally speaking, pencils are used to identify diamonds. This method has high accuracy. But in the appraisal, we should pay attention to some inlaid old diamond jewelry, which is not suitable for water seepage, because if it is inlaid with copper or silver, it is easy to oxidize. In addition, generally speaking, the crystal face of a diamond also needs to avoid contact with oil, dust and objects.

How to judge the diamond ring by yourself?

Netizen replied (***2) The chemical composition of Ivy Iris pencils is the same as that of diamonds, but the physical structure is different, so many people use pencils to detect the authenticity of diamonds, which is a more practical and effective method. When identifying, first wet the diamond with water, and then gently carve it with a pencil. On the crystal face of a real diamond, where the pencils cross, there is no trace, but if it is not a diamond, it is glass and crystal. It will leave a mark on the surface. Generally speaking, pencils are used to identify the authenticity of diamonds. This method has high accuracy. The answer time is 2013-01-1517: 20. Natural small diamonds have strong heat transfer ability, and hot air dissipates quickly. The diamond to be tested is close to the mouth so that it can breathe gently.

How to identify the authenticity of diamond ring

It is really important to identify the authenticity of diamond rings. I hope it will help you read.

(1) cloud mask of jewelry and diamond identification certificate, including grafting, cloning and copying, using "group ID card";

(2) The diamond ring is only marked with English letters or Chinese Pinyin, and the name, composition, content and special treatment are not marked according to the manual (deceiving consumers to know about jewelry knowledge and deliberately making people unable to understand it);

(3) Artificial natural jewelry is a genuine pearl, which is obviously artificial but not marked as artificial;

(4) Jadeite jade jewelry is stacked in a crooked way, and the common methods are dyeing, filling, padding and splicing.

(5) Pass "crystal glass" as crystal, "topaz" as sapphire, "Ma Laiyu" as jadeite and "artificial silicon carbide" as diamond;

(6) The jadeite that has been artificially pickled, waxed and colored passes off as natural A goods;

(seven) the price of jewelry is uncertain, and the false discount after raising the original price without authorization disturbs the market and deceives consumers;

(8) Deduct the weight of the diamond ring. According to the national measurement regulations, the decimal circle of a diamond is not rounded, but one ninth. Illegal vendors use mosaic molding, which is difficult for customers to calculate. For example, 19.8 points, even 19.7 points and 19.6 points are marked as 20 points and so on. But they don't know that the weight of a carat ranges from several hundred yuan to thousands.

(9) It is difficult to accurately measure the specific values such as the width ratio and pavilion depth ratio of inlaid diamond ornaments, and individual businesses have drilled detection loopholes, which are collectively called "perfect and high quality" to fool consumers;

(10) exaggerates the concept of publicity and hype, making consumers deceived.

How to tell whether a diamond is genuine or not?

Identify diamonds:

Oiliness test: use a special pen or ballpoint pen dipped in oily ink to draw a line on the diamond table, which will leave an uninterrupted straight line. However, other imitations are not lipophilic, leaving intermittent dotted lines at the scribe line.

Water drop test: the water drops on the diamond will remain spherical for a long time, while the water drops on the imitation will disperse in a short time.

Breathing test: breathe into the diamond, if the water vapor on the diamond disappears, it will become a real diamond immediately; If the water vapor stays on the diamond for a few seconds and then disappears, it is a fake diamond.

Sensory test: At room temperature, diamonds and their imitations are much cooler when you touch them with your tongue.

A simple way to identify diamonds

With the increasing demand for jewelry and diamonds, the market for fake diamonds such as artificial diamonds is expanding, and even some jewelry operators can't tell the difference. Here are some simple ways to identify the authenticity of diamonds.

1, single refraction of diamond

The single refraction of diamond is determined by its essential characteristics. While other natural gemstones or artificial gem are mostly birefringent. When the fake diamond is observed with a magnifying glass of 10 times, it is easy to see that the edges and corners overlap, and two bottom lights are exposed at the same time from the slightly inclined front. If the difference in birefringence is small, such as zircon, you can also see the image of overlapping background light.

2. Adsorption of diamonds

Diamonds have a certain affinity for grease and dirt, that is, oil stains are easily adsorbed by diamonds. So touching the diamond with your fingers will feel sticky, and your fingers seem to feel sticky. This is not found in any gem. This method needs training to master the nuances.

3. Characteristics of straight lines

The surface of the diamond is polished very smoothly. Dip the pen in ink and cross the diamond. If it is a real diamond, the surface will leave a smooth and continuous line, which is characterized by a straight line. Forgery will leave dots and lines. Observation in this way should be made with the help of a magnifying glass.

4. Unique diamond luster

Under the incandescent light of 100 degree, it is easy to see which diamond has diamond luster by comparing with the counterfeit. This method should not be carried out in too dark or too strong light.

How to tell whether a ring is genuine or not? Where are the diamonds? thank you

Intuitive recognition

Perspective test-clean the gem with a round diamond cutter, put it on a piece of white paper with lines, and judge whether the gem is a diamond by observing the lines on the paper. If it is a standard round cut diamond, the lines on the paper cannot be seen through the diamond (synthetic strontium titanate and synthetic rutile are similar to diamonds and have no perspective effect). However, due to the different refractive index, most imitations have enough light leaking from the pavilion surface, and some lines on the paper can be seen through perspective observation.

Brightness estimation-the ability of external reflection and total internal reflection of gem crown to refract light, which is called brightness. When diamonds and their imitations are placed in the same light source and environment, the standard round diamonds with fine cutting are observed from the bottom, and almost all the light entering from the crown is reflected by the crown, showing strong brightness. However, the refractive index and cut of imitation are different from that of diamond, and the light entering from the crown will leak out from the pavilion to varying degrees, thus reducing the brightness.

Oiliness test-Draw a line on the diamond table with a special pen or ballpoint pen dipped in oily ink, which will leave an uninterrupted straight line. However, other imitations are not lipophilic, leaving intermittent dotted lines at the scribe line.

In the water drop test, clean the mesa of diamond and imitation, drop a little water each, and observe the time and contour of the water drop. The water droplets on the diamond will remain spherical for a long time, while the water droplets on the imitation will disperse in a relatively short time.

Breath test-put the sample to be tested and the known diamond sample together on the glass, blow on them and observe the disappearance of the fog. The fog on the diamond disappears quickly, but the fog on the imitation disappears slowly.

Sensory test-diamond and its imitation are touched with the tip of your tongue at room temperature. The diamond is much cooler than the imitation.

I wonder if I can help the landlord. The best way is to go to the appraisal center for appraisal, which is only a few tens of dollars. You don't need a certificate for identification, and it is even more expensive to ask for a certificate.

How to tell the authenticity of a diamond ring?

In the face of the hype of the salesgirl, don't you know how to tell the difference between a platinum diamond ring and a real one? To this end, we recommend five common methods to identify the authenticity of platinum diamond rings. Take you through the maze and unlock the secret of how to distinguish the authenticity of platinum diamond rings. How to identify genuine and fake platinum diamond rings with naked eyes? The first is the water drop test method: wipe the upper facet of the diamond clean and dip a drop of water on it with the end of a toothpick. The water droplets on a real diamond will be medium-sized round water droplets. The water droplets on the fake diamonds will soon disperse. Secondly, the penetrating observation method: the high refractive index of diamond, the higher the refractive index, the stronger the reflection and the lower the relative perspective. You can prepare a piece of paper with a straight line. The two unknown diamonds to be tested face down and cover a straight line. If you can see a straight line under a diamond, it is definitely not a natural diamond. How to identify genuine and fake platinum diamond rings with naked eyes? In addition to the above first and second methods, the following three methods are also common. The first method is lipophilic: diamonds are oil-absorbent, while fake diamonds are not. Rub the diamond on your face and rub it with your thumb. Your thumb will feel sticky and not easy to slip, while fake diamonds will make your thumb feel slippery. Secondly, the breath test shows that natural diamond has good heat transfer ability and the hot gas dissipates quickly. Put the diamond to be tested close to your mouth, breathe gently, and let the diamond to be tested be covered with a layer of light fog. At this time, watch the evaporation of diamond fog immediately. If it is a natural diamond, the fog will disperse immediately, otherwise, the fog will stay on the fake diamond for a while before dispersing. Finally, look at the measurements and weight. The diameter of 1 carat natural diamond is about 6.50 mm (0.65 cm). Most fake diamonds are always far from natural diamonds under the same weight of 1 carat. The above five methods are commonly used to distinguish the authenticity of platinum diamond rings in daily life. Of course, in addition to attracting attention, choosing a large diamond merchant with integrity is also an important factor to avoid buying fakes.

How to detect the authenticity of diamond ring by yourself

Breath test: You can breathe into the diamond. If the water vapor on the diamond disappears immediately, it is a real diamond, and if the water vapor stays on the diamond for a few seconds, it is an imitation.

Water drop test: drop a drop of water on the diamond. If the water drops remain spherical for a long time, it means that the diamond is real; if the water drops disperse in a relatively short time, it means that it is an imitation.

Test with an oily pen: A special pen or ballpoint pen with oily ink can also tell you how to distinguish diamonds from real diamonds. Draw a line on the diamond table. If you leave an uninterrupted straight line, the diamond is real. However, if there are intermittent dotted lines at the scribing point, it means imitation. But this method needs to be observed with a magnifying glass.

White paper marking test: draw a black line on white paper and put the edge of the diamond table on that line. If you can't see that line, it means that the diamond is real. If you can see it, it's fake.

Look at the adsorption test: diamonds have a strong adsorption to oil and dirt, and they will feel sticky when touched with your fingers. This is not found in other gems. In this way, it is necessary to strengthen the training of finger touch.

Diamond luster test: under the incandescent light of 100 degree, it is easy to compare the cut diamond with the fake one, and it is easy to compare which one has diamond luster. But this method should not be carried out in too dark or too bright light.

How to identify diamond ring

? Many jewelers flood the market, which dazzles the prospective newlyweds who want to choose diamond rings as marriage proposal gifts, and the identification of diamond rings has always been a puzzling and curious problem for many consumers. In fact, it is not difficult to identify diamond rings. There are many common ways to tell whether the diamond ring you bought is genuine or parallel. Next, I'll give you advice from Diamond Bird. ? The identification of diamond rings depends first on the quality of diamonds. The quality of a diamond is mainly determined by its 4C, namely, clarity, weight, cut and color. These four points determine the value and price of diamond ring. But if it is only worn as a general ornament, the quality of diamonds can generally meet the demand. , followed by the technical level. A good quality ring must be made of suitable materials and exquisite materials. Fine processing, smooth surface, fine quality, no gouge marks, no burr, and clear jewelry marks; The pattern combination of the ring is harmonious, fine and clear, and the pattern is smooth. Circular symmetry, moderate width; If it is a gold-plated or gold-plated ring, its surface should be bright and uniform, with the same color, and there should be no pores, black spots or dull luster at the corners and concave-convex joints; The solder joints shall be smooth and free from virtual welding. Measure the torus and foot again to see if they are suitable. Generally speaking, the ring surface is slightly heavier than the ring foot, but it is not good to be too heavy. In this case, the ring will fall to the abdomen of the finger. The method of inspection is to put the ring on the little finger first, keep it loose and shake it gently, so that the ring face does not turn to the lower end of the flat finger. Finally, it depends on whether the shape of the ring meets the requirements of the designer. If it is a symmetrical ring, its pattern and shape cannot deviate from the center. Either the two sides are symmetrical or the four sides are symmetrical, and the symmetrical sides must not be uneven or inconsistent in size. Generally, the diamond inlaid with the precious ring is placed in the center, and the teeth of the diamond and the ring holder must be closely matched, and the smaller the gap, the better; You can also gently turn the exposed part of the diamond with your fingers to see if there are any signs of loosening.

How to distinguish real diamonds from fake diamonds?

Natural diamonds will be refracted by light under light. It refracts seven colors of light. The fire is bright and dazzling. Imitation drill will have fire color, but it has poor jumping feeling. I hope I can help you.

How to identify the authenticity of diamond ring

As a newcomer who is about to get married, buying diamonds is essential. Diamonds represent love and are regarded as a symbol of happiness. But now the market is full of unscrupulous merchants, and many consumers are afraid to buy fake diamonds. In fact, there are still many small ways to identify diamonds. Next, I will introduce some simple methods to identify diamonds.

First, the identification method of oil.

Take advantage of the oleophilicity of diamonds, drop a drop of oil on diamonds or use oily strokes. If the oil stain disappears soon, it is a fake diamond.

Second, the light source identification method.

Because the diamond is single refraction, if you put the diamond in your hand, if you can't see the fingerprint on your hand, then the diamond is real.

Third, the pencil identification method.

Because diamonds are made of carbon, we draw on them with pencils, so there will be no traces of real diamonds.

These three methods seem simple, but in fact they are simple and effective. Official website has many ways to identify diamonds. Love her beautiful diamonds.