The difference between the old pit and the new pit of jadeite, how to divide the old pit and what do

We often hear about the old pit and the new pit, and many people don't know what it means. Some consumers think that the old pit is good and the new pit is bad, which is actually a big misunderstanding.

Xinkeng jadeite is a kind of natural untransported original mineral jadeite, because most of these jadeites are buried in the deep mountains, it is difficult to mine, because of the late mining, it is called Xinkeng jadeite, that is, Xinkeng jadeite has nothing to do with the time of formation. According to the successive years of jadeite mining, jadeite can be divided into "old pits" and "new pits", "old pits" refer to the earlier mining of jadeite pits, and "new pits" are the holes that have been mined for a short time or have just been mined. Regardless of whether it is an old pit or a new pit, it cannot simply be assumed that the goods from the old pit must be better than the new pit.

Judging the quality of jadeite is a very comprehensive factor, in addition to the species, there is also a lack of water? Is the bottom gray or not? What about color?

What about cotton?

Not all the jadeite mined in Laokeng is of good quality and is of high quality. Not all jadeite mined in Xinkeng is of poor quality. The "old pit" and the "new pit" are indeed divided by time, but not the time of the formation of jadeite as we imagined.

In fact, the old pit and the new pit are now used chaotically, and many new emerald friends will often form a misunderstanding: as long as it is a good jadeite is the old pit, and some bad quality is called the new pit, one-sided that the old pit is good, and the new pit is bad. In fact, the old pit and the new pit are only the definition of the excavation time of some mines, not the definition of the quality of jadeite.

In recent years, many people have used the old pit and the new pit to refer to the quality of jadeite, however, consumers do not understand what is the old pit and what is the new pit, and many merchants will mislead consumers with brick material is the new pit.

The new pit and the old pit do not refer to the difference in the year in which the jadeite was formed, but the difference in the time of mining, and many people fall into this misunderstanding. At present, when it comes to "old pits" and "new pits" in the market, they all describe the quality of jadeite rather than the mining age. However, according to the existing mining situation, the quality of jadeite mined in the old pit is indeed better than that mined in the new pit, but this does not mean absolutely, just because the output of jadeite is declining year by year, and the jadeite mined in the new pit is not as good as in previous years, so it is also used by people to distinguish the quality of the two from "old pit" and "new pit".

1. The old pit species is a jadeite that is green and pure, evenly distributed, delicate in texture and good in transparency. The new pit species refers to jadeite with poor transparency and coarse jade. The texture of the old pit jadeite is delicate and flawless, the glass luster is shiny, and the luminescent effect is good.

2. The old pit refers to the origin and industrial chain of jadeite, and the new pit refers to the charm and influence of jadeite.

3. The so-called "new pits" refer to the pits of those jadeite veins that were formed later, far away from the above-mentioned veins. Due to the young age, the open-air formation time is not enough, so most of the texture is coarse and loose, and the water head is short, and some people also include mountain jade ore.

4. Therefore, the old pit and new pit in the current sense mainly refer to the quality of the jadeite species, and the good and delicate ones are generally called the old ante pits, because they are close to or similar to the quality of the rough stones mined from the old pits in the former geographical sense; By analogy, the new pit refers to those jadeite rough stones that are thicker and more tender.

5. Like many natural minerals, Sanga jadeite has primary and secondary minerals. The secondary ore of jadeite is the jadeite mineral transported by natural geological movements such as river water, which is water stone or water turned sand stone, which is usually called the old pit, and the primary ore of jadeite is called the new pit.

The new pit jadeite and the old pit can be distinguished by looking at the density, looking at the fluorescent filial piety, looking at the amount of cotton, looking at the transparency and looking at the hardness.

1. Look at the density

Because of the dense structure of the old pit jadeite, the density of the old pit jadeite is slightly larger than that of the new pit jadeite, and it can be roughly distinguished from the small difference in weight when you hold it in your hand.

2. Look at fluorescence

The old jadeite with good water sometimes feels that there is a kind of light radiating from the inside of the jadeite, which is gentle and connotative. The new species of jadeite is less rolling and there is a light.

3. Look at how much cotton there is

Look at how much cotton, more cotton is the new pit jade bracelet, the old jade bracelet cotton is very little, even if there is, the cotton is also a subtle dot.

4. Look at transparency

The last one is transparency, the water head of the old pit jadeite is generally very good, that is, the transparency will be better, even if the seed head is poor, the bean seed jadeite head is better, take an old pit bean jade and a new pit bean jade with a similar water head to make a comparison, the water head of the old pit bean seed will be significantly better than the bean seed jade of the new pit.

5. Hardness

The density of Laokeng jadeite is higher, and its hardness is also relatively high; The hardness of the new pit jadeite is low, and experienced carvers can distinguish the new and old pit jadeite by the hardness when carving or polishing the jadeite.

Jadeite, bai has a new pit and an old pit. du

Xinkeng, zhi refers to loose structure, tender seeds, cotton dao

Many, the low-grade jadeite material with a short head is a genus. Laokeng refers to the high-grade jadeite material with delicate structure, dense structure, high permeability, good clarity and good water head.

But it is worth pointing out that at present, on a treasure online sales platform, many merchants will be pickled, injected, dyed to optimize jadeite (non-natural jadeite) in the name of Xinkeng jadeite, sold to jade friends who do not understand jadeite, jade is very beautiful, very cheap, be especially careful.

Illustration of the old pit jade:

The original meaning of "old pit material" refers to the jadeite from the old mine mouth, which is the jadeite production area deposited by the natural transportation and erosion of those rivers;

Due to the precipitation and weathering and erosion of the old pit, some jadeite with poor quality and loose texture are screened out by nature, so the old pit is mostly jadeite with dense structure;

"New pit material" refers to the newly excavated and newly discovered jadeite from the pit;

Generally, it is a loose structure and a jadeite that is not dense enough;

1. Look at the cotton, there is very little jade cotton in the old pit, even if there is, the cotton is also in the form of subtle dots, and there are many jade cotton in the new pit, which is also accompanied by a lot of things like ice slag.

2. Look at whether it is gelatinous, Laokeng jadeite sometimes gives people a very transparent visual and at the same time feels that the meat seems to contain gelatinous substance, which is evenly distributed and dissolved in the flesh.

It gives people a very down-to-earth and connotative feeling, and the new pit will not.

3. Look at the gray scale, usually the old pit jadeite with a good water head always has a little gray.

4. Looking at the fluorescence, the old jadeite with good water sometimes feels that there is a kind of light emitted from the inside of the jadeite, which is soft and connotative.

The old jade pit is much better than the new pit!

Xinkeng refers to the primary ore of jadeite, that is, after the formation of jadeite, it has not undergone a large geological capacity transformation, also known as "new field".

Compared with the old pit jadeite, the texture of the new pit jadeite is slightly coarse, and the surface luster of the new pit jadeite is also glass luster, but the luster is not as sharp and rigid as the old pit jadeite.

The performance of this surface luster of the new pit jadeite is closely related to the internal structure of the new pit jadeite, the combination between the crystal particles inside the new pit jadeite is not very tight, and the gap between the mineral crystal particles and the particles is not tightly cemented, so the new pit jadeite in the carving and polishing process, the internal crystal gap of the jadeite is easy to leave dents, the surface of the jadeite is not so smooth and flat, and its surface luster is not so sharp and rigid.

What is the difference between buying jadeite "new pit material" or "old pit material"? Newbies must pay attention.

Jadeite, like other natural minerals, has primary and secondary minerals. The primary ore of jadeite refers to the jadeite minerals that have not or only undergone weak late dynamic geological transformation, which is called "new pit" (new field). The secondary ore of jadeite refers to the jadeite mineral after strong transformation by natural geological processes such as river water, weathering, etc., also known as water stone or water turned sand stone, usually called "old pit" (old field).

"Old pit" and "new pit" do not represent the new and old geological age of jadeite formation, but only the difference between geography and the distribution of geology and minerals. In actual trade activities, the so-called "new pit species" and "old pit species" are used to describe the quality of jadeite. As long as it is high-quality, high-transparency, and delicate crystalline jadeite, it is "old pit species" jadeite.

The concept of "old pit species" is the same as "old species".

The ice in the old pit is planted with green jade.

The secondary mineral jadeite of the "old pit" has an outer skin, delicate texture, small crystalline particles, water head and foot, and high transparency. This is the "old pit species" jadeite.

The primary ore of "Xinkeng" is relatively ordinary in texture, without outer skin, with rough texture, large crystalline particles, poor moisture and low transparency. It is called the "new pit species".

There are also high-quality jadeite in the primary mine (new pit), which is not much different from the high-quality jadeite (old pit) in the secondary mine, and can also be called "old pit". The current output of "old pits" (old farms) is very small, and many of the "old pits" on the market now come from "new pits" (new fields). There is also a kind of half-mountain and half-water stone, and the texture and species are also between the new pit species and the old pit species, becoming the "new and old species".

The market often says "new pits" and "old pits"."It is generally a measure of the quality of jadeite, and rarely points out the mining area where jadeite is produced, so as a consumer, you don't need to have too much mystery about these two terms. If you have any questions, you can directly consult the director of Yunnan Ruili Jewelry Testing Station.