Why does jadeite have cracks, is it normal to have cracks in jadeite

Jadeite "nine out of ten" saying, so how the cracks on the jadeite material are naturally formed, the following is detailed:

Jadeite was first formed as vein jade, that is, a large belt of ore. With geological movements and groundwater erosion, these ore belts continue to break and come to the surface with crustal uplift. When the vein jade (rock jade) is exposed to the surface, with the weathering of the surface and the erosion of flowing water, the large rock jade continues to break into small pieces.

Some of these small pieces of jadeite are constantly washed in the flowing water, constantly colliding with other stones in the riverbed, and the soft parts of the texture are constantly falling off, and finally the hard jadeite core is left and weathered out of the cortex, which we call them water stones. Therefore, most of the cracks of the water stone are formed by collision, and the cracks are slender and deep, and they are rarely staggered. There are rarely a large number of small fissures around the fissures.

Generally speaking, we think that the water stone is a better jadeite for weathering and screening, and the species are relatively old. Therefore, if the finished product has solitary lines to avoid cracks, fewer cracks to avoid cracks, and there are no staggered cracks and cow hair cracks around, then combined with other characteristics, we can still recognize that this jadeite species is old enough. Then the other part of the jade jade pieces that fell off were washed away by the flood and stacked up on top of each other, and the alpine gravel was finally formed by the uplifting.

At present, most of the old field materials at the entrance of various famous fields are alpine gravel jadeite. The cracks that form inside the alpine gravel are completely different from those of the water stone. Except for some mechanical impact cracks caused by rolling down from a height, most of the cracks in alpine gravel are formed by internal thermal expansion and contraction.

Due to the poor thermal conduction effect of jadeite, the outer layer is often heated to a very high temperature by the sunlight during the day, and the inner layer is still cold. In the evening, when the inner layer heats up, the outer layer becomes cold again. Under the continuous thermal expansion and cold contraction, small cracks continue to appear in the outer shell of jadeite, and then the shell falls off layer by layer; The inside of the jadeite is pulled out of the cracks in the loosely interwoven parts of the fibers due to pulling, and they continue to expand.

Therefore, when the jadeite is relatively tender inside, we usually see the manifestation of various cracks: such as cross cracks, chicken claw cracks parallel or small cracks in tic-tac-toe, sometimes as many as cow hair (cow hair cracks), resulting in the whole material can not be picked. It is reflected in the finished product often using a large number of crack-avoiding, hollowing, openwork and other techniques to make up for the defects of the material.

Of course, in the process of transportation and processing, improper methods will also form cracks. Cracks are serious defects in jadeite, which have a greater impact on its value.

Have you learned this?

This is a naturally formed crack after there is a crack, this ** can not be sold.

Jadeite has cracks and internal stone patterns.

is a hierarchy that naturally forms at the time of generation.

External cracks are minerals affected by geological processes.

or in the process of mining, transportation, processing, etc.

Cracks formed by external forces.

The formation process is caused by external pressures.

It is normal for jadeite to have cracks, jadeite is purely natural, formed by years of geological movement of nature, so it is normal to have cracks inside. But it is necessary to distinguish the stone grain and cracks of the jadeite. If you scratch it with your fingernails, what you don't feel is the stone pattern, which is what the crack looks like after it has healed; If you scratch it with your fingernails, it's a crack, and a jade with a crack is worthless.

Jadeite is a crystalline aggregate of natural minerals that cracks during formation. It is normal for jadeite to have cracks, and the key is how to deal with them.

What should I do if there is a crack in a piece of jadeite? Especially on a piece of old high ice spring color material, there are three cracks. The jade carver ingeniously conceived and redesigned the finished image of this piece of good material with the theme of "combining vertical and horizontal".

<> meticulous processing process, along the cracks and fine trimming, the prototype of the three portraits was figured out, the three of them formed a general direction in space, and had their own different forms, smart and elegant.

If the jadeite has cracks, it is necessary to determine whether the jadeite cracks are external or internal cracks (stone patterns). It is normal for jadeite to have stone patterns, and it has little impact on the value of jadeite. The external crack has a huge impact on the firmness of jadeite, and has a great impact on the jadeite.

You can rub the surface of the jadeite with your fingernails, if it is smooth and smooth, it means that the crack is stone on the inside, and if there is a sense of blockage, it means that it is an external crack, which needs to be paid attention to.

Cracks in jadeite jade are a common phenomenon. The larger the carving, the more likely it is to encounter cracks. However, in the sales process, cracks in the jadeite are serious flaws, which have a great impact on the jadeite.

Very normal. Because of the cause of the stone or the change of stress after mining, there will always be cracks, which is a characteristic and normal, but the general processing will try to avoid or reject, and the materials without cracks are usually more expensive.

1. The cracks in the jadeite bracelet may be shear or tensile cracks formed by stress in the geological process, and have not been healed by later minerals, or they may be damaged in the process of mining, processing or decoration.

2. Cracks on the surface of jadeite are very common in the jadeite industry, and there are many reasons for cracks, the most common of which is that jadeite cracks appear in the process of mining and transportation.

3. Of course, in the later stage of manual mining, transportation and processing, there are also man-made "cracks". There is a jargon for playing jadeite rough stones, called "no cracking, no jadeite", which also shows that "cracking" is inevitable for jadeite. In this case, more attention needs to be paid to maintenance and collisions in daily life.

4. There are two main reasons for the cracks in the jadeite, one is the natural reason, and the main limb is due to the geological environment in the formation process; One is man-made, mainly due to the process of mining.

5. Jadeite has cracks in the collapse, but the shear or tensile cracks formed by stress in the geological process are not healed by the later minerals, and may also be caused by the damage of the stone in the process of mining, processing or use.

1. Cracks in jadeite are caused by cracks caused by geological action in the process of jade formation or cracks formed by external forces, such as firecrackers, knocking, impact or vibration in the process of jade mining, transportation, processing or storage.

2. Natural formation, if the jadeite is found to have cracks at the time of purchase, it is likely to be naturally formed by jade, in the growth period of jade, through geological action and rock extrusion, many cracks have been generated inside the jade, these cracks are not harmful to the jadeite, but will affect the quality of the jadeite.

3. The cracks in the jade jade bracelet are naturally formed. The structure of jadeite is a metamorphosis intertwined structure, which refers to the structure formed by the interweaving of fine fibrous mineral crystals around the transparent granular porphyry crystals under the action of metamorphism.

4. The reason why the jadeite is cracked inside and cannot be touched on the outside is because it is not very serious and has not reached the level of complete cracking. Rotten and gone.

1. It is not normal for jadeite bracelets to have cracks, because the selection of jadeite bracelets is very strict, cracks are very serious flaws, and the texture of jadeite with cracks is generally not too good. Therefore, cracked jadeite is usually not made into bracelets, and it is easy to cause bracelet breakage.

2. It is normal to have cracks on the jade bracelet. There are two main aspects of the cracks on the jadeite bracelet, one is the natural factor, and the other is the human factor. The natural cause is mainly in the formation process, because of the geological bad empty tribe environment.

3. It is normal for jadeite to have cracks on it. In the jadeite market, most of the jadeite on sale will have cracks, because the natural jadeite itself has no cracks, so the jadeite has cracks, and the jadeite jewelry made will naturally have cracks.