How to see the authenticity of diamond ring

Question 1: 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.

Question 2: How to judge a diamond ring by itself? The netizen replied (2 pencils in total) that 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 practical and effective method. When identifying, be sure 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, it is glass, crystal and other materials. 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.

Question 3: How to tell the true and false rings? Where are the diamonds? Thanks to visual recognition.

Perspective test-clean the gem with a round diamond cutter, put it on a piece of white paper with lines drawn on it, 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 the jewel crown to reflect and refract light externally and totally internally 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-at room temperature, when the tip of the tongue touches the diamond and its imitation, 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.

Question 4: How to tell whether the diamond on the ring is true or false? 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.

Question 5: How to identify the authenticity of a diamond ring is really important. I hope the content is helpful to you.

(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.

Question 6: How can diamonds be identified from authenticity?

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.

Question 7: How to identify the authenticity of a diamond? 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.

High hardness synthetic diamond

The R&D Center of General Electric Company of the United States has synthesized synthetic diamonds with atomic density per unit volume higher than that of any existing solid substance, and the hardness is higher than that of natural diamonds, which is the hardest material in the world. It contains 99% carbon 13 isotope and natural diamonds. According to scientists' observation, with the increase of carbon isotope density 13, the distance between atoms will be slightly reduced, which makes the hardness of artificial diamonds exceed that of natural diamonds with slightly loose atomic arrangement. In the process of synthesizing synthetic diamonds, scientists first precipitate carbon in methane gas rich in carbon isotope 13 into small diamond fragments by chemical evaporation, then decompose these small fragments with very high pressure, and then recrystallize the massive diamond with the maximum weight of 3 carats.

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Diamond is one of the hardest gems found on the earth, which symbolizes eternal love and is cherished by people. Many people want to have a beautiful diamond for their loved ones, but how to buy a diamond that they like and are worth the money is a science.

What is a diamond? Diamond is the only gem in the world that is made of a single carbon element. It is the hardest natural substance at low temperature and high pressure.

What is the 4C of a diamond?

The clarity and flawless degree of a diamond.

Colored diamonds come in different colors. Generally speaking, the whiter the better.

Cutting involves the shape and proportion of diamonds, as well as the factors that affect the aesthetic feeling of sparkling fire colors.

Actual weight of carat diamond (1ct = 0.2g = 100 min)

The actual weight of how much diamonds you have to pay depends on these four C's, and these four C's are the biggest factors that determine the price of the fifth C.

How to identify diamonds?

1, if you draw a line with a pen and ink on the table of a diamond, it will be an uninterrupted straight line, while other gems are intermittent dotted lines, because diamonds are lipophilic.

2. If the diamond is yellow when viewed from the side, then the Yan * * * level is generally below the "I" color, because when viewed from the front of the diamond, only the shiny fire color can be seen, unless the diamond is yellow, the color cannot be seen clearly.

3. When we distinguish diamonds from other imitation gems, we can use a breath of "ha" to form steam on the surface of diamonds. Diamonds conduct heat quickly, and the steam will disappear in one second, while other gems take a long time. Generally, diamond pens for jewelry are made according to the principle of heat conduction.

Finally, when you decide on diamonds, it is very important to ask the merchant for the certificate of a formal testing institution, which will give you better protection. ...& gt& gt

Question 8: How to see the authenticity of the diamond ring certificate There are several ways to see the authenticity of the diamond ring certificate:

First, see if the laser mark on the diamond waist matching the certificate is consistent with the certificate;

Second, see if the position of the diamond defect is consistent with the certificate;

Thirdly, if the certificate data is true, the laser marking is true and the quantity is consistent, then the weight of the diamond is verified;

If you don't believe the results of website and telephone inquiry, you can also go to a third-party certification body for review.

But what you need to know here is that the domestic diamond appraisal certificate is generally not stable enough. Domestic certificates mainly include the National Jewelry Testing Center, which may be much stricter than other institutions, so when your diamond recheck is lower than your original certificate, don't think yours is fake. Many consumers take the diamonds bought in place A to place B for identification, which causes many misunderstandings, mainly the existence of local protectionism. Generally speaking, diamond cutting in China is only average, good and very good. Foreign certificates clearly indicate the seven indexes of diamond cutting: 1. Table width ratio, 2. Full depth ratio, 3, crown angle ratio, 4. Crown height ratio, 5. Pavilion depth ratio, 6. Waist thickness ratio, 7. Bottom to tip ratio. At the same time, the domestic certificate clearly indicates the polishing degree and symmetry ratio of diamond cutting.

Question 9: How to identify the authenticity of diamonds? There are many ways to identify the authenticity of diamonds. The simplest way is to go to a professional identification agency. There are other methods as follows:

(1) Look at the color: Because diamonds reflect light strongly, you can put your mouth against the diamonds to make them not reflect light, so that you can see the color more accurately. The order of color from good to bad is: colorless transparent (or crystal color) white, light yellow and yellow.

(2) Look at the purity of crystal transparency: This mainly depends on how many impurities are contained in the diamond. High-grade diamonds are still flawless when placed under a magnifying glass for more than ten times. Generally, those with few impurities are called "microfilaments", while those with many impurities are called "half flowers", "one flower" and "two flowers", and so on.

(3) Looking at the lathe operator: From the perspective of refraction, the diamond lathe operator's angle is accurate, and every angle and surface are the same. The higher the accuracy of this angle, the higher the grade of the diamond. Real diamonds have 57 or 58 reflecting surfaces (with a few exceptions).

(4) There is a simple way to identify genuine and fake diamonds, that is, if a diamond is put in your hand, you can't see the fingerprints, while fake diamonds such as rhinestones, white rubins (also known as synthetic diamonds) and Ceylon diamonds can see the fingerprints. Claudie's diamond ring is trustworthy.

Question 10: How do you see a diamond ring? Analysis of seven common fake diamond rings 1. Wear a diamond on your arm or face. If it feels warm, it is a fake diamond. Because real stones don't transfer heat, no matter how you touch them, they should be cold.

2. Breathe into the diamond. If the water vapor on the diamond disappears immediately, it proves to be a real diamond. If the water vapor stays on the diamond for a few seconds and then disappears, it is a fake diamond.

3. Draw a straight line on a piece of white paper, put the diamond flat on this straight line, and observe this straight line through the diamond. If the lines at both ends of the diamond edge are broken or deformed, it can be concluded that it is a real diamond. If the line is still straight, it is a fake diamond.

4. Rub the diamond back and forth several times on fine sandpaper. Those with scratches on the surface are fake diamonds, while those without scratches are real diamonds.

5. Touching the crystal face of the diamond gently with your fingers will make you feel sticky, 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.

6. Wet the diamond with water first, and then carve it gently with a pencil. On the crystal face of a real diamond, there will be no trace where the pencil crosses, but if it is not a diamond, but glass, crystal and other materials, there will be traces on the surface.

Honey, identifying diamonds with naked eyes or simple instruments is just a simple screening process. Finally, the appraisal result given by the authoritative jewelry inspection department recognized by the state shall prevail.