How to judge good jade and bad jade? How to identify good and bad jade

To identify the advantages and disadvantages of jade, the Anglo-American Jewelry Association has four standards of "color, transparency, uniformity and shape". In China, there are six standards, namely "color, transparency, uniformity, shape, knocking, and illumination".

1.Color No matter what color of jade, the jade color must be distinct. "White as cut fat", "yellow as steamed millet", "green as green feathers", "black as ink", is an excellent summary of the ancients for jade.

There are variegated colors, dark ones, and they are not good. Among the various colors, green is the best for jade. Red and purple are worth one-fifth of green.

The jade containing four colors is called "Fulu Suki", and if it contains only red, green, and white colors, it is called "Fulu Shou".

2.Translucent like glass is called jadeite jade, which is the top grade. Translucent and opaque ones are called intermediate jade or ordinary jade. Before the Qing Dynasty, those with red, green, and white colors were called jadeite jade, and now jadeite jade refers to transparent jade, and most of them are transparent and green.

3.Uniform refers to uniform color. The color of jade is uniform, and if it contains green but the color is uneven, the value is very low.

4.The bigger the shape, the more valuable it is, and the thicker it is, the more valuable it is.

5.There are often fractures and cuts in the knock jade, and these cracks are generally not easy to observe, and the existence of cracks can be distinguished by the turbidity of the sound.

6.There are black spots and flaws that are not easy to find with the naked eye, as long as you use a 10x magnifying glass under the light (avoid strong lights), you can see it at a glance.

In addition, when buying jade, you should also pay attention to the craftsmanship. The shape of jade products is exquisite and chic, the image is vivid, the layers are clear, the patchwork is staggered, and the decoration is simple and elegant. Color, let the color be perfect.

Shallow flat carving, although the plane is like a mirror, its scenery should be far and near. The hollow one should be clear and exquisite, and it should be vivid.

When buying jade, do not do it under strong lighting. Because the light is easy to make the jade lose its original color, and even hide some flaws. The so-called "beautiful jade under the lamp" is this truth.

Different jades have different means of identification, and they cannot be generalized.

Different jade has different characteristics, the standard of distinguishing good and bad is not quite the same, to give a few examples, jadeite and Hetian jade are what we often say jade, the color of jadeite pays attention to warm, yang, positive, green, and Hetian jade is usually as white as fat, if the white of Hetian jade is placed on the jadeite, it becomes a "white porcelain" material, such jadeite can only be said to be a relatively low-end variety.

But the same jade, there is also a certain common characteristic, that is, the flaws of jade, any variety of jade has the following points, will greatly reduce its value.

1. Waterline. "Waterline" is a defect or defect in jade, whether it is Hetian jade seed material or jadeite has a "waterline", jade without a "waterline" does not exist in nature, but the seed jade with a "waterline" is usually more delicate and oily.

The "waterline" itself is an in-situ stress pressure balance surface, especially the existence of large pieces of jade, and experienced jade collectors take the waterline as an important criterion for judging the texture of jade.

When the jade was formed, the geological environment was very unstable, and when the two pieces of jade were initially formed, due to the change of the geological environment, there was extrusion and re-fusion between the jade, and then the waterline was generated.

The waterline is a translucent tendon-like thing inside the jade, which appears in a straight line or nearly a straight line.

This is called the waterline.

2. Cotton wool. In jade, whether it is Hetian jade or jadeite, there is cotton wool.

No matter how good the moistness is, no matter how delicate the material, there will be this phenomenon, but some of it can be seen by the naked eye, and some of it is hidden in the jade.

Cotton wool is also divided into many forms, some are large and small granular, and some are mist and flower-like.

Because of the natural shape, the shape will be different. Of course, the value of this piece of Hetian jade can be measured according to the amount and size of cotton wool.

If there is a lot of cotton wool, even if it is a re-oily material.

Then his value will also be greatly reduced.

Of course, if the carved master can make good use of this cotton wool, it can also add a lot of color to such a Hetian jade material.

For example, if the cotton wool is irregularly shaped, you can use its characteristics to make plum blossom petals in the eyebrows.

As long as you use it skillfully, you can also choose it.

Of course, this requires a lot of skill from the carver.

3. There are many types of cracks on cracked jade, and the causes are also different, and the external manifestations are also different.

Generally speaking, common cracks include natural cracks, fracture lines, broken lines, turtle back lines, fried heart lines, wrapping lines, and fried shock lines.

Some of the cracks are more obvious, such as fracture lines, broken lines, and turtle back lines;

Things like fried heart lines, wrapping lines, and fried frightening lines are more hidden and not easy to detect.

People always want to pursue flawless jade, but in real life, jade without any cracks is rare, and there will be a little bit of flaw.

However, we can also reduce the impact of cracks on the aesthetic effect through certain treatments.

Ways to see good and bad jade: feel, color, clarity, structure.

1. Hand feel. Compared with jade in terms of feel, the better the quality of jade, the more warm and delicate it feels to the touch, like a baby's **Kai sock leak, with a strong glass luster or grease luster; The surface of poor quality jade is relatively dry and rough.

2. Color. Observing the color of jade, among the many serious diseases such as white, green, yellow, green, and ink, the value of white jade, jade, and black jade is relatively high, while the grade of topaz and green jade is lower. In addition, the color of good jade is uniform, bright, and no variegation, and the color of poor jade is mottled and variegated.

3. Clarity. You can observe jade in the sun or under strong light, and good quality jade has almost no cracks, few impurities, and high purity; Poor quality jade has more impurities, obvious cracks, and low transparency.

4. Structure. The interior of high-quality jade often has fine inclusions, which seem to have a flowing beauty, and the overall artistic conception is rich; However, the internal particle structure of inferior jade is rougher, there are more flaws, and it looks like it lacks a sense of agility.

How to care for jade:

1. Wear it every day: The best way to raise jade is to wear it on your body every day, so that the jade can be soaked by the human body's best oil and sweat, and it will become more and more transparent over time, and the more you wear it, the brighter and brighter it will be, and it will look better and better. If left unworn for a long time, the luster of the jade will become more and more dim.

2. Regular cleaning: Usually the jade should be cleaned and maintained regularly, and wiped clean with a cotton cloth when the surface is dirty, but avoid contact with soap, detergent and other chemicals, otherwise it is easy to corrode and affect the luster of the jade.

3. Proper soaking: jade itself is water-loving, and can be washed with water at ordinary times, washing can maintain the cleanliness of jade, and it can be brushed appropriately to remove dirt. You can also soak jade in water to replenish water, but be sure to avoid contact with daily chemical detergents and the like.

4. Avoid bumps: jade has high hardness, but the brittleness is not high, so we should pay attention to handling it gently, try to avoid bumps with hard objects, and be careful not to fall to the ground, otherwise it is easy to cause fracture and affect the overall beauty and value.

To distinguish the quality of jade, it is necessary to look at the brightness of the color, the transparency, and the uniformity of the color.

There are many germplasms of jadeite, such as ice species, glass species, and slightly inferior bean species. When we choose, it is natural that the jade with delicate texture and tight structure is preferred. The water head of jadeite includes transparency and hidden edge lusterness, the drier the jadeite, the worse, and the more luster, the better.

The color of the hands and limbs is rich and colorless, and the carving is natural and delicate.

The judging criteria of white jade include color, texture, impurities, etc., good Hetian white jade is moist and delicate, with greasy luster, white and pure color, no blue, gray and other color shifts, and no obvious flaws and impurities.

Characteristics of jade

Different jade has different evaluation criteria, pick up the jade and look at the bright light, you can see the color and flaws of the jade at a glance, sometimes the surface of the jade looks perfect, only to find that there are flaws. The color distribution can also be seen through the action of illumination, and whether it is a natural color can be distinguished by light irradiation.

Jade is a kind of Hetian jade, the color is emerald green, at first glance it looks like a jadeite that is not polished, the emerald blue color is generally scattered in the root of the white jade, it has the dignified white jade, the emerald color of Qinghai emerald is composed of chromium elements, the emerald color is generally more intense, but also ethereal, so the good color of Qinghai emerald green ** is now very high.

Hello answer, I have seen your question and am sorting out the answer, please wait a while Hello, I have seen your question and am sorting out the answer, please wait a while Hello! I'm glad to answer that question for you, and the answer to that question is as follows:

You can identify jade by looking at its texture, because jade is a polycrystalline mineral formed by silicates at high temperatures and pressures, and the size of the constituent crystals has a direct impact on the smoothness, transparency and hue of the crystals. Therefore, the finer the polycrystalline structure, the better the texture of the jade. Secondly, by looking at the cracks, the cracks on the jade may have been caused during mining or processing.

Once you have a crack, no matter how good its color, texture and transparency, it will affect its value. Sometimes the crack is not noticeable on its surface, but it can be seen when you look closely in the sun. Especially for jade that has been bleached, faded or dyed, cracks are common.

Scratches on glass with jade are garbage.

Jade is originally a kind of stone, divided into A, B, C categories, generally you can feel its temperature, the cooler is okay, the best way is to burn it with fire, according to its coldness can judge its quality.

You can also put it under a fluorescent lamp, judging by its translucency and color.