Four methods of Hotan jade maintenance
1) human support;
In the process of wearing and playing with jade, we will constantly wipe and touch jade. Even if jade rubs repeatedly with the skin of the palm, wrist, chest, neck, face and other human parts, the original stone of jade can be gradually eliminated, and the stone of jade itself will be domesticated after contact and friction with our human skin. When we raise jade, the method is widely used, suitable for all kinds of occasions and jade.
Actually, this process is a kind of? Human plate culture? The process of cultivating jade by people is particularly prominent in Hetian jade materials in Xinjiang. People's nourishment in plate grinding will promote the oiliness and warmth of jade itself.
Another one belongs to people? Hide and raise? . Use smooth materials such as cloth bags as jade materials? Hide? Get up, keep secrets from others, and try to be isolated from external substances such as air to maintain the stability of the jade environment.
2) hydroponics;
We often go to the jade counter in some department stores. You may inadvertently notice that there will be a glass of water around it, which will be puzzled by many jade collectors. Then, we can't help asking what this glass of water is for.
This method is what we call hetian jade? Water? .
The moisture contained in Hetian jade is an important factor for the structural stability of jade.
If the jade is put in dry season or the air is too dry, if the jade is not properly humidified and wetted, the moisture in the original stone of Hetian jade will evaporate, making the original stone of Hetian jade appear dry. In severe cases, cotton threads and cotton spots will appear inside Hetian jade stone. And this kind of water conservation is the most effective maintenance method of Hetian jade moisturizing.
Therefore, we will notice that merchants put water cups next to Hetian jade, which will increase the humidity in the air. The moisture of Hetian jade original stone will be suppressed to some extent.
3) oil cultivation;
Hotan jade oil conservation is the most important conservation method. After Hetian jade original stone is stored for a period of time, cotton thread and cotton spot will appear on its surface. If the surface of hetian jade stone is coated with proper oil. It can reduce or eliminate cotton threads and cotton spots on jade in a short time, and restore the original appearance of jade itself.
4) Comprehensive maintenance;
The so-called total maintenance is to combine the second or third.
However, it should be noted that no matter what maintenance method is adopted, the floating dust, dirt and various attachments on the surface of Hetian jade stone must be cleaned with clear water in advance, so as to effectively ensure the maintenance effect.
In the maintenance method of Hetian jade original stone, the author also learned that many jade merchants use water wax. Yu Fujun suggested that if it is a personal collection or some high-grade Hetian jade seed materials with excellent texture, it is recommended to take olive oil, walnut oil or baby oil for maintenance. If you don't wear it for a long time, it's best to put it in a special storage box or jewelry bag and store it properly. It should exist in a cool and dry place. Generally, Hetian jade stone ornaments are taken out and oiled for about half a year.
Olive oil and walnut oil are the best vegetable oils, baby oil is mineral oil, followed by. Don't misuse other oils. If improperly daubed, it will corrode the stone surface of Hetian jade and affect the quality of Hetian jade itself.
Types of hetian jade
brief introduction
The new local standard of Hetian jade issued by the Quality and Technical Supervision Bureau of Xinjiang Uygur Autonomous Region was implemented on June, 2065438 1 day. The new standard highlights the real standard samples of Hetian jade, and is entrusted to be published by China Hetian Jade Appreciation Network. In the identification method of Hetian jade, the three items of touch, head and sound in the original standard are cancelled, and the new standard clearly stipulates that the identification method of Hetian jade shall be implemented according to the national standard GB/T 16553 "Jewelry and Jade Identification".
What is hetian jade? Many players have struggled with this problem, and most of them have tossed and turned online. Is hetian jade really expensive?
Hetian jade itself is not a regional concept, not specifically the jade produced in Hetian area of Xinjiang, but the name of a class of products. In our country, stones with tremolite content exceeding 98% are called Hetian jade, which can also be called nephrite, tremolite, tremolite plus nephrite, tremolite plus Hetian jade. None of these names are illegal, and they are all within the national standard.
Specific breakdown,
Xinjiang Hotan material, produced in Hotan area; Subdivision can be divided into mountain material, landscape and seed material, and Xinjiang Hetian jade seed material has the best texture, followed by landscape.
Two Russian materials; Hetian jade produced in Russia is called Russian material in the circle, and its output form can also be divided into mountain material, seed material and landscape material. However, the seed materials of Russian materials are few, mostly landscape and mountain materials. The value of Russian white jade is only lower than that of Xinjiang Hetian jade sheep fat jade, so its value is extremely high. More than 90% of the high-end white jade on the market is Russian.
Sanqing sea material; Qinghai jade, also known as Qinghai jade or Kunlun jade, is one of the common generalized hetian jade varieties in the market. It comes from the eastern edge of Kunlun Mountain and enters Qinghai Province. It is located in the same metallogenic belt as Hetian jade in Xinjiang. The east of Kunlun Mountain is called Kunlun Jade, and the north of the mountain is called Hetian Jade. The linear distance between them is about 300 kilometers. Therefore, Kunlun jade and Hetian jade are basically the same in material combination, origin and structure, which can be described as the twin brothers of nature. The blue sea material in the old pit is delicate in texture.
It is comparable, but the texture of the new pit is worse, and it is easy to fade and yellow, so the market is not good in recent years.
Four Korean materials, Korean materials are generalized Hetian jade sapphire mountain materials. Its main producing area is Chuncheon in the south of the Korean Peninsula, and it is produced in local serpentine, which is mostly bluish yellow and brown. The powder is not very good The chemical composition of Korean material is basically similar to that of Hetian jade, and its hardness and density are close to that of Hetian jade, slightly smaller, and its hardness is about 5.5. It is the lowest value among Hetian jade in Xinjiang, 10,000 times worse than high-end sheep fat jade.
General introduction
There are 8 sets of physical standard samples, namely suet white jade, white jade, blue white jade, sapphire, topaz, sugar jade, jasper and jet.
In recent years, there is also a recognized blue and white variety in the industry, which is separated from jet.
Sheep fat white jade and white jade
Sheep fat white jade: refers to high-quality white jade, the color is milky white, slightly cyan, milky yellow and so on. , fine and moist texture, good oiliness, less cracking, and can contain water and stone flowers. The impurities are generally below 65,438+00% and the sugar color is less than 30%. According to the color of sugar, it can be further subdivided into: white sheep fat jade and sugar white sheep fat jade. The sugar-colored part of white jade with sugar sheep fat accounts for 30.85%.
White jade: the color is mainly white, but also slightly gray, yellow, blue and other colors. The texture is dense and delicate, moderately greasy, and cracks can be seen. According to the sugar content, it can be further subdivided into white jade and sugar white jade. The sugar-colored part of sugar white jade accounts for 30.85%.
Sapphire and sapphire
Sapphire: a variety between white jade and sapphire, with white as the basic color, light and medium tones such as gray-green, blue-gray, yellow-green, brown and gray, translucent or slightly transparent, with fine texture, general grease, translucent and visible cracks. According to the color of sugar, it can be further subdivided into blue white jade and sugar blue white jade.
Sapphire: the color ranges from blue to dark blue, gray, yellow-green and other medium or dark colors, and can be further subdivided into sapphire and sugar sapphire according to the number of sugar colors.
Topaz and Tang Yu
Topaz: light to medium yellow tone, often yellow-green, millet yellow, with gray and green tones, which can be further subdivided into topaz and sugar topaz according to the number of sugar colors.
Tang Yu: Formed by secondary action, it is dyed with iron oxide and manganese oxide, showing reddish brown, yellowish brown, brownish yellow and dark brown colors. When the sugar-colored part accounts for more than 85% of the whole sample, it is named Tangyu.
Jasper and jet
Jasper: The color is mainly green, including green, gray green, dark green and other common colors.
Jet: The color is grayish black or black, accounting for more than 30%. Black is mostly disseminated, leaflike, banded and aggregated, and can be mixed with white or grayish white, which is uneven.
Underglaze blue
The material with more than 90% ink color is called jet, and the black-and-white or gray-white material is called blue and white. A significant difference between blue and white jade is that the ratio of ink color to white meat is different.