1, identify jade We can listen to the sound of jade, such as jade bracelets. First, tie the jade bracelets with thin threads, hang them in the air, and then tap them with something like a glass rod. The sound of natural jadeite is crisp; The sound made by fake jadeite is dull and not crisp enough.
You can judge the authenticity of jadeite by its sound, weight and hardness.
3. Identify by weight. 2, look at the color root. Natural jadeite, especially green jadeite, has color roots. 3. Identify by tapping sound. 4. Identify by the color and luster of the surface. 5. Observe its cross section with a magnifying glass.
4. To identify jadeite, you can go to the local jewelry and jade quality supervision and testing center, which is more authoritative. In addition, in some jade crystal wholesale distribution centers, such as Sihui, Donghai and other cities, there will also be gem testing institutions.
5. How to identify the authenticity of the certificate depends on the sign: on a real jade certificate, the most conspicuous signs are several English abbreviations. Common signs are "CMA", "CAL" or "CNAL". CMA is a sign that the measurement certification of testing institutions is qualified, and the institutions with this sign are legal testing institutions.
6. Bubble method. Put the jade bracelet in a glass basin filled with water, and illuminate the bracelet at the bottom of the glass basin with a flashlight. If the edge of the jade bracelet reflects white light, it can be judged that this bracelet is a glue-injected bracelet or a B bracelet. Jade bubbles do not reflect white light.
Measurement method of jadeite density
It is said that the density of jadeite is measured by clear water. Weighing the density of jadeite is generally divided into five steps. First prepare props, portable commercial electronic scales, beakers and a piece of jade. Then, a proper amount of mineral water is injected into the beaker, and after it can completely submerge the tested sample, it is placed in the center of the scale, vertically placed and reset.
Method for measuring the density of jadeite: Prepare the jadeite stone to be measured, weigh it, and record it as A. Then put enough water in the bucket to make the jadeite stone suspend in the bucket and weigh it. At this time, it is necessary to ignore the weight of water in the bucket.
How to calculate the density of jadeite is as follows: tie the jadeite with silk thread, put the water cup on the precise electronic scale, and remember to reset it. Put the jade into the water cup and record the weight at this time.
Prepare a miniature electronic scale with an accuracy above 0. 1, a cup with half a glass of water and a thin thread. Weigh the net weight of jade first, then take it off, and put the cup with water on the scale to weigh the water and the cup.
How much is it to identify the jade Buddha?
1. What is the value of jadeite? You can judge the value of jadeite by looking at the color, the type of water and the appraisal certificate. In jargon, the color difference is one point, the price difference is ten times, and the color depth, depth and size are different, and the price difference is also very large. The planting water of jadeite refers to the transparency and fineness of jadeite texture.
2, grams, big enough, thick enough, the current normal price of the jade market is about 3000 ~ 4000.
3. The price appraisal of jadeite needs to be appraised according to the actual situation of jadeite, and cannot be generalized.
4. The germplasm is good, the foundation is basically open, slightly foggy and the water head is not very good. Advantages are sufficient length and width, large device shape, slightly thinner thickness than length and width, and generally 5 mm is more suitable. On the whole, the jade pendant belongs to the middle and low grade, and the object will be grayer than the picture, and the color is not clear.
The simplest identification method of jadeite
The easiest way to identify jadeite is to look at luster, internal structure and fluorescence reaction. Look at the luster of jade swinging from side to side in the sun, carefully observe the luster of jade surface, and identify the authenticity of jade. Natural jadeite has a good glass luster, but the luster is not very strong.
Simple identification method of jadeite: observe whether jadeite has glass luster, and jadeite is really glass luster. Observe whether the jade surface is smooth, and the jade surface is really smooth. Tap the jade to see if the sound it makes is crisp and pleasant. Really, the jade sound is crisp and sweet.
Look at the color: Look at the color to distinguish the authenticity of jadeite. Real jadeite is generally uneven in color depth distribution, with cracks and light transmission, which is generally light in color. Fake jadeites are generally uniform in color. If there are cracks, it can be seen that there is artificial pigment deposition after light transmission, which leads to darker color.
First of all, look at the luster of jade, jade presents glass luster, followed by water head and internal structure. . The water head is the brightness of jadeite. The higher the water head, the better and more precious the germplasm is. Be very careful when investigating the jade head, because the brightness is related to the thickness of the jade itself.
How to measure the density of jadeite?
The density calculation method of jadeite jade is as follows: inject a proper amount of mineral water into the beaker (generally non-destructive deionized water is used in the laboratory), and put it in the center of the scale and vertically after it can completely submerge the tested sample.
Method for measuring the density of jadeite: Prepare the jadeite stone to be measured, weigh it, and record it as A. Then put enough water in the bucket to make the jadeite stone suspend in the bucket and weigh it. At this time, it is necessary to ignore the weight of water in the bucket.
Divide the net weight of jadeite by the increase of water and cup weight to get the density of jadeite.
Then, put the jadeite original stone gambling stone into a net bag, put it into the water of the bucket, and make it suspend in the water. Measure the weight of jadeite again, and record it as B. The actual density of jadeite can be calculated by a ÷ b, although in practical experience, the measured density will not always be 3.
Tie the jade with silk thread. Put the cup on the precision electronic scale and remember to reset it. Put the jade into the water cup and record the weight at this time.
How to calculate the density of jadeite by yourself?
How to calculate the density of jadeite is as follows: tie the jadeite with silk thread, put the water cup on the precise electronic scale, and remember to reset it. Put the jade into the water cup and record the weight at this time.
Divide the net weight of jadeite by the increase of water and cup weight to get the density of jadeite.
The density calculation method of jadeite jade is as follows: inject a proper amount of mineral water (generally non-destructive deionized water is used in the laboratory) into the beaker, and put it in the center of the scale and vertically after it can completely submerge the tested sample.
Measure the weight of jadeite again, and record it as B. The actual density of jadeite can be calculated by a ÷ b, although in practical experience, the measured density will not always be 3. But as long as the measured density is above 2, it is normal density.
The specific gravity balance can be used to calculate the specific gravity of jadeite: at present, the electronic balance with high precision is used to measure the density. The density of jadeite measured by hydrostatic method (density method) is 34g/cm3(+0.06, -0.09), which is an important index to distinguish jadeite from other jadeites of the same kind.