Old jade and new jade can be distinguished from two aspects. There is an oxidized jade skin on the surface of the old jade, commonly known as "patina", which is similar to the skin of autumn pear and obviously different from the natural color of jade, while the new jade does not. Judging from the theme of sculpture, ancient jade is a symbol of rank and power, and there are many mythical flowers, birds and figures, such as dragons and phoenixes. New ones are generally auspicious themes.
Jade has been closely related to China culture since ancient times.
In the eyes of China people, jade is a symbol of good fortune, so China people like to use jade to protect themselves, keep peace, ward off evil spirits, and even bury them with jade; Westerners mainly appreciate the elegance, grace, mystery and romance of jade.
Classification of jade:
Jade can be divided into nephrite and jadeite, which are two different minerals. The colors of nephrite are translucent white, yellow, green and black, and the colors are evenly distributed. As for jadeite, there are mainly white, purple, yellow and green, and the uniformity of color distribution among different germplasm will be different.
The vast majority of jades produced in China are nephrite, and "sheep fat white jade" is a treasure in nephrite, with delicate texture and white color. Many exquisite jade works of art are carved from nephrite.
Jadeite is mainly produced in Myanmar and is even rarer than nephrite. Because jade is superior to nephrite in quality, color and price, jade ornaments on the market are mainly jade, and the demand of consumers is very great, so we focus on jadeite.
Appreciate jade:
The appreciation of jadeite should pay attention to color and germplasm, which can be subdivided into color, transparency, clarity, cutting and cracking, generally starting with its color.
colour
Color is the most important factor affecting the value of jadeite, and the color of jadeite can be evaluated from the following four areas:
Purity: Purity refers to the ratio of primary color to secondary color of jadeite. Take green jadeite as an example, pure green is the best, followed by yellow or blue, and gray is the worst.
Appropriate shade: when it comes to the depth of color, of course, the thicker the better. But if the color is too thick, it will have the opposite effect and reduce the quality of jade.
Be bright: the brighter the color of jade, the more attractive it is. The more gray or black it contains, the darker the color.
Uniform: The more uniform the color distribution, the better, and the higher the value.
transparency
The transparency of jadeite affects the refraction of light, thus affecting the overall aesthetic feeling. When the light enters the transparent and delicate jade, it will reflect beautiful light, which will make people feel the crystal clear of jade and greatly increase its aesthetic feeling. On the contrary, if light meets jadeite with low transparency and rough texture, it will reflect dark light, which will greatly reduce the attractiveness of jadeite.
clean
Cleanliness refers to the defects contained in jadeite, mainly white and black, which are caused by other minerals contained in jadeite. Relatively speaking, black defects are more ugly than white ones. The less impurities in jadeite, the better.
incision
The processing of jadeite products can be divided into two categories: light body and carving. Because the surface of the bare finished product is not covered, the requirements for raw materials are high. In addition to no cracks, the proportion of cutting work, the thickness of the product and whether it is symmetrical are also very important, which can affect the appearance of the finished jade. For example, the sliced "egg noodles" should not be too thick or too thin, and the position of the "pot" should be in the middle and the proportion should be moderate.
The evaluation of flowers mainly measures their aesthetic feeling and the fineness of carving. Usually jadeite with cracks will be carved to cover up its defects.
crack
Cracks will greatly reduce the value of jadeite. If there is a crack in the jadeite jewelry, it may crack along the crack if it is slightly collided. Therefore, you need to be extra careful when buying jade ornaments. Generally speaking, with a flashlight, it is easy to detect the existence of cracks.
High-quality jadeite can be sold at a considerable price, but the supply in the market is limited. In order to get better profits, some businessmen do not hesitate to manually treat jadeite. So commodities A, B and C appeared in the market.
Artificial jadeite
C goods
C goods refer to fake colored jade that has been artificially colored. The method is to infiltrate the dye into the colorless jadeite at high temperature and high pressure, so that all or part of it is dyed into emerald green or purple, but its color will fade and become dim with time.
Class b goods
B refers to the chemical removal of jadeite with defects, impurities and yellow parts on the surface, leaving only the original green and white elements, and then injecting epoxy resin glue into jadeite as consolidation, so that the whole jadeite looks more transparent and the color is more vivid. Because the interior of jade has been destroyed in the process of chemical treatment, the structure has become loose, so B goods are prone to cracks on the surface. In addition, if dyes are added during the treatment, it is called B+C goods.
natural jadeite
A goods
A goods refer to natural jadeite that has not been artificially treated at all.
Don't look at the color under the lamp.
In fact, any jewelry should not be evaluated under the lamp. This is especially important for jadeite. This is because the color of jadeite, especially the color of jadeite such as flashing gray, flashing blue and oil blue, has a much better visual effect under light than under natural light. Therefore, under the light, we can only look at the cracks, water head length, reflection degree or other characteristics of jadeite. But to investigate and evaluate the green color of jadeite under natural light.
The color difference is first-class, and the price difference is ten times.
For high-grade jadeite, the price difference is more than ten times. For example: a 500,000 yuan jade ring face and a 5 million yuan jade ring face, what is the quality of jade? Style, size, planting moisture and defects are all first-class and impeccable, and the key to the price difference between them lies in the level of green. How to recognize and distinguish the differences between emerald green is extremely important, at least we have seen and experienced it. "Look more and buy less" For the purchase of jadeite original stone, "look more" is a selection process; It is a comparative process; It is also a process of experience accumulation and verification; It is the premise of "buying". "Buy less" does not mean not buying, but reminding you to "look" before buying. "It is better to buy a large film than to buy a thread". For the green shape feature in the jadeite original stone, "a line"? Green belt and "a large area" of skin green are two manifestations of the same green form. Are they "lines"? Standing and "patting" The difference between lying and lying. The thickness of "line" is known, but the depth is unknown; The area of the "sheet" is known, but the thickness is unknown. The key to the motto is to remind people not to be confused by the green "more" and "less" on the surface of jadeite, but to recognize the essence of green "standing" and "lying". So, I don't really buy a large piece of green jade, but I remind you not to expect too much from the thickness of green.
There is water all over the dragon.
The so-called "dragon" actually refers to the green color in jade. That is to say, in general, whether in the thickness or transparency of the texture, the green part is stronger than the part without green? Di Zi, everything is getting better. Of course, sometimes the difference between emerald and the earth is too strong, just like the next proverb.
The stool grows tall and green.
Emerald land and emerald green are interdependent and closely related. Generally speaking, when the green water is good, the land is usually not too bad, and vice versa. The motto is mainly to remind people not to ignore the particularity of emerald green. Although not every "shit place" will have advanced green. But the first-class youth can appear in the "shit land".
No locks and no flowers.
"Book of Rites" said: "Da Gui is not coarse, but also beautiful." In fact, high-grade emerald green usually expresses its natural essence in the form of "elements". For example, the fingers and feather tubes in second-hand goods belong to "plain life". If there is a pattern on the sculpture, there must be something fishy under its beautiful pattern. Therefore, there is a saying in the industry that "no locks and no flowers". The same is true of modern jadeite products.
Look at the green with cold eyes
The so-called "green" refers to a colorful "fake jade", which is an old trick. At present, there are "bathing", "bathing" and "coating". Of course, any fraud is likely to succeed for a while, but it will never give away the clues. The old adage is for people in the industry, reminding people to pay attention to the feeling at first sight and don't let go of any doubts. Therefore, it is better for consumers to "look on coldly". Be sure to go to a store with good reputation and guaranteed quality to buy jade. Yumeiren
Nephrite is characterized by fine, dense and pure texture. The beauty of texture was recognized for the first time in history. For example, before the Han Dynasty, the beauty of texture was emphasized, and the beauty of jade proposed by Confucius was mostly the result of anthropomorphizing the texture characteristics of jade. As the old saying goes, "beautiful jade is flawless, white jade is flawless", which shows that jade is delicate, pure and flawless. Can be summarized as follows.
1, the "hard and fine" jade is hard, fine and moist, and the surface of fine-grained dense rock is smooth after abrasion. Therefore, it is called the beauty of "combining rigidity with softness". The hardness here is the result of comparison between jade and colored stone.
2. "Moist and shiny" jade and pebbles are dense and massive, and the mineral fracture shows a strong oily luster. In addition, they are ground into a smooth surface, so they are "moist and shiny".
3. "Innocent beauty" and white jade are composed of a single tremolite mineral and contain no impurities, so they present the beauty of "flawless jade, flawless white jade".
Nephrite is a fibrous microcrystal aggregate interwoven with tremolite or actinolite into a felt-like structure. This structure determines that it has many excellent properties, but the quality of texture varies with grain size, distribution uniformity, types and quantities of impurities. See table 1 for details.
Looking at the texture of Hetian jade, it is delicate, hard, meticulous, moist and beautiful, which can give people a warm and dignified feeling and enjoy beauty.
The beauty of jadeite is not only related to the uniformity of particle size, but also directly related to transparency and polishing degree. That is, the finer the texture, the higher the transparency, the better the polishing performance and the stronger the surface reflectivity, which not only increases the aesthetic feeling of jade, but also improves the quality of jade.
Second, the beauty of jade color
Wang Yi's aesthetic view of four colors in the Eastern Han Dynasty developed Confucius' thought of color beauty. Created a historical precedent for the evaluation of jade color beauty. According to the principle of modern aesthetics, the author discusses the characteristics of jade color beauty from three principles: unity, harmonious contrast and rhythm.
1. One of the beautiful monochromatic colors, such as blue sky, blue lake, clear spring water and bright sunshine. Simplicity can make people have a clear and pure aesthetic feeling. Hetian jade is very rich in color, as white as cut fat, as green as jade, as yellow as steamed chestnut, as red as cockscomb and as black as pure lacquer.