protect
1, don't collide with hard objects. Jade is easy to crack after collision. Sometimes, although the cracks are invisible to naked eyes, the molecular structure in the surface layer of jade has been destroyed, resulting in dark cracks, which will be exposed over time, greatly damaging its perfection and collection value.
2. Avoid dust and oil pollution as much as possible. If there is dust on the jade surface, clean it with a soft brush; If dirt or oil stains are attached to the jade surface, it can be scrubbed with mild soapy water and then washed with clear water.
3. The jade pendant should be properly put away when not in use, preferably in a jewelry bag or jewelry box to avoid collision.
4. Avoid contact with perfume, chemicals, soap or human sweat. Because jade is exposed to too much sweat, it will be eroded, destroy the outer layer and affect the original bright chromaticity. Especially white jade-suet white jade is more resistant to sweat and grease, so it should be wiped with a weak cloth after wearing.
5. Don't place the sun in direct sunlight for a long time. Jade will expand in the sun, and its molecular volume will increase, which will affect the quality of jade, so it is more taboo to be close to the heat source.
6. Tea can raise jade, and the way to raise jade is similar to raising tea pets. For example, the jade raised by green tea is smooth, the jade raised by black tea is red, the jade raised by Fu tea has beneficial probiotics, and the jade raised is not fragile.
Extended data
Identification method
The following methods can be used for identification:
First, when you choose jade in a dazzling array of jade stalls, you can use local materials and drop a drop of water on the jade. If the water drop is dew, it will prove to be true jade if it does not disperse for a long time; If the water drops disappear at once, it means it is defective or fake.
Second, perception. You can touch it back and forth when choosing jade. If you feel cold and lubricated, it may be real jade, because real jade has this property.
Third, pick up your favorite jade and watch it in the light. If the color is clear and the green is evenly distributed, it means that it is real jade.
Fourth, if the jade merchant allows it, you can lick it with the tip of your tongue. Real jade tastes astringent, but fake jade doesn't.
Fifth, if you choose jade in the informal jade market, you'd better bring a magnifying glass. Because you can see the quality of jade with a magnifying glass. In general, jadeite is seen under a magnifying glass. If it is real jade, it is a good jade with few or no cracks. If there are many or large cracks, it is proved to be defective.
Identification method of common sense of life
Identification method of water: drop a drop of water on jade, if it is dewdrop-shaped, it is real jade; The water droplets disappear quickly, which is a fake.
Touch by hand: If real jade is touched by hand, it will feel cold and lubricated.
Inspection method: Jade faces bright places, such as sunlight and light. If the color is clear and the green is evenly distributed, it is a real jade.
Tongue licking method: the tip of the tongue licks the real jade, which has a astringent feeling; Fake jade has no astringency.
Magnifying glass viewing method: put the purchased jade under a magnifying glass to see if there are cracks. The jade without cracks is the best quality jade, followed by cracks. Even if it is real jade, the value of cracks is greatly reduced. The more cracks, the more obvious and the lower the value.
In addition, if you don't have relevant knowledge about jade, or you don't have much confidence in buying good jade in the informal market, then when you go to see and buy jade, you'd better bring friends who know how to see jade to prevent you from losing money.
First, from the identification of jade craft traces; Second, oxidation identification; Thirdly, condensate water identification; Fourth, the evaluation of artistic level; 5. Qin color identification; Six, odor recognition
First, before you collect jade articles, you should first read them carefully and read more monographs on ancient jade, which is rich in knowledge. Recommended books are; Textual research on ancient jade written by Wu Dazhi in the late Qing Dynasty has a detailed explanation and textual research on the age, use, name and size of ancient jade, which is accurate in drawing and of great reference value.
The Complete Works of Fine Arts and Jade Articles in China, the Complete Works of Jade Articles in China 1-6 published by Hebei Fine Arts Publishing House, the Ancient Jade edited by Zhou Nanquan, the Ancient Jade in China edited by Zhao Ming and Li Qun, the History of Jade Articles edited by Zhang Guangwen, and the Identification of Ancient Jade, Folk Jade, Protected Jade and Precious White Jade edited by Hong Kong. Taiwan Province ancient jade expert Mr. Li Gengfu's Complete Works of Jade Identification (Volumes I and II), etc.
Second, direct contact is very important. Most people can only see through the glass in the museum, and all kinds of ancient jade should be seen as much as possible. You can feel the difference if you touch it too much. The real ancient jade has a long history, heavy hand feel, smooth appearance, natural color, neat knife work and moist patina. Xinyu doesn't have these feelings.
Third, at least in the Song Dynasty, antique jade appeared. At that time, someone used rainbow grass to fake chicken blood infiltration. After the Qing Dynasty, there were more and more fakes, and unprecedented creations appeared, such as "dog jade", "sheep jade" and "wind jade", which attracted people to fall for it.
Four. Imitations and fakes of ancient jade mostly use low-priced xiuyan jade, dushan jade, lantian jade or other low-quality miscellaneous jade, and the hardness of these jade is mostly below 5.5. The annual output of Hotan high-quality jade material is very small, the market price has exceeded RMB 0/00000 per kilogram/kloc, and the hardness is 6-6.5. Hetian jade is rarely used by counterfeiters because of its high cost and difficult processing.
5. Generally, the hardness of small steel knives is about 5.5. Poke the jade hard and you can see the imitation and the fake at a glance.
6. The fake jade synthesized by artificial high pressure with jade powder has appeared in the market, and its color and hardness are similar to those of Hetian jade, so special attention should be paid to its identification.
Seven, the real ancient jade has soil infiltration, lime infiltration, mercury infiltration, corpse blood infiltration, cinnabar infiltration, copper infiltration, surface oxidation layer and so on. Some of the spots on the fake are fried, some are baked by fire, and some are etched by chemicals. Find out the differences and differences between true and false in color, luster and thickness.
Eight, the carved lines on the jade surface have different cross sections, such as V-shape, semi-circle, U-shape, etc. U-shape is the characteristic of modern mechanics.
Nine, the face shell of the slot is authentic in terms of color and patina, and the phenomenon of hair cracking on both sides of the slot is the characteristic of modern "machinists".
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