2 。 Jade and jade, cyan have different concepts of "blue" and "black" in our country, and cyan here is a vague color, not gray, not green or green, but actually an unknown light green. Say white blue, say blue white, it is sapphire, between sapphire and white jade, it is blue white jade. There is no standard boundary between sapphire and white jade and sapphire, which is determined by the naked eye.
Jasper means that the color of jade is green or dark green, which is easy to distinguish.
4. Ink jade is grayish black and black. Often appear uneven, cloud-like or pure ink, with dark clouds, light ink, golden mink hair, beautiful hair, pure black and so on. What is more precious is pure darkness. Black light is like black boots. Ink jade, also known as jade, is caused by black impurities in sapphire. Sometimes ink jade appears on sapphire, and sometimes sapphire appears on it.
5. Topaz includes yellow, beige, beeswax yellow, chestnut yellow, autumn chrysanthemum yellow, yellow flower yellow, egg yellow, beige, yellow and so on.
6. Tangyu is named after brown sugar, which is caused by iron oxide. Sugar jade can appear on sapphire like jet. Most of them are purplish red or brownish red, and those who are red are rare.
7. dushan jade was named after being born in Dushan, Henan. Its main feature is multicolor. Blue, green, yellow, white, black, brown and other colors appear on a piece of jade at the same time, and the hardness reaches 7 degrees individually.
8. xiuyan jade is mainly composed of serpentine minerals, which is an aggregate composed of hydrous magnesium silicate. A small amount of calcite, tremolite, chlorite and other minerals can appear in jade. The hardness is 2.5-4 degrees, and some reach 5.5 degrees. Colors are white, yellow, pink, light green, emerald green, dark green and so on. Mainly used for processing jade carvings in factories. China's Liaoning, Gansu, Guangdong, Xinjiang and Taiwan Province provinces are rich in mineral resources.
Secondly, jadeite is jadeite, which means "Hong Fei is green". The jadeite recorded in China ancient books is not today's jadeite.
Jadeite is a sodium aluminosilicate mineral with a hardness of 6.5-7 degrees. Jade with pure chemical composition is colorless or white. When the composition contains metal pigment ions, it appears green, emerald green, yellowish green, blue-green, brown, red, orange, lavender, pink purple and other colors. Green is called Cui, and brown and red are called Fei.
Emerald jade is naturally formed by natural minerals, and it must have natural beauty, inexhaustible, stone lines, crystals and flaws. The best green jadeite is the high green and bright green of the glass floor.
When identifying the authenticity and quality of jadeite, we must use our own practical experience flexibly and be careless. To master the color and texture of jadeite, we should make a correct judgment by combining the processing technology of utensils and other factors.
The world-famous jadeite is produced in the Wulong River Basin in Myanmar. According to the Qing History, when the jadeite from Myanmar was imported into China, it was collected in Tengchong and Dali, Yunnan, and then transported to the mainland. It still exists from the early Qing dynasty to the present. Because jadeite is expensive and scarce, fake jadeite appears gradually. Stone jadeite and stone jadeite common in Qing Dynasty.
Stone jadeite is made of ceramics or glass, melted at high temperature and cast with colorant (green).
Colored jadeite is false in color with relatively low grade jadeite or colorless jadeite. In recent years, due to the progress of science, colored jadeite has reached the point where it is genuine. Colored jadeite is a colorless jadeite, which is transformed into beautiful jadeite by soaking, heating and acidification with chemicals such as chromium salt and nickel salt as colorants. Natural jadeite is a natural color formed by chromium ions entering hard mineral crystals, while colored jadeite adheres to the surface and cracks appear. It is afraid of acid, alkali and sunshine, which is not good-looking.
Third, the identification of nephrite.
Nephrite is mostly a vessel-like ornament, leaving many decorative patterns, age characteristics, physical changes (Qin color) and so on. At the same time, we should fully understand the characteristics of the times, the changes of vessel shape, knife work and decoration.
At present, there are five common fakes in society:
1. Old jade and new carving.
2. New jade and new carving.
The identification of the above two kinds of fakes is mainly due to the rough, irregular and different shades of carving by the knife workers, which has no style of the times, artistic beauty and antique taste. But the real situation is quite different. Its knife carving is regular, symmetrical and reasonable, leaving no tail and no flaws. The more you look at it, the more comfortable it is. 3. Die casting.
The so-called die casting is to mix jade ore, melt it at high temperature and cast it in a specific mold, just like casting a workpiece in a factory. There is also stamping, that is, grinding the ore into powder, adding chemical glue and colorant or some jade powder, and then stamping the product. This new product is elegant and expensive, and it is sold in all major shopping malls on the market.
Step 4 build a nest. (glass products)
It is made by melting glass ore and adding colorant.
It is characterized by unsightly appearance, bubbles and no jade lines, which can be recognized after two or three times.
5. Plastic.
It is made of modern plastics and colorants, heated and die-cast, and then polished by hand. It is characterized by no hardness, light specific gravity, elasticity and unattractiveness, and is marked with pins and nails.
Appraisal of jade jewelry II
The identification of jade ornaments should be based on hardness, transparency, color, luster and spots. Real jade is very hard and wear-resistant, crystal clear, pure and beautiful in color and sparkling. If you can see cracks, fibrous cotton threads or dark wounds in jade, it is inferior jade. All fake jade has wrinkles on the surface and bubbles inside, which is light in weight and low in hardness, and the sound is crisp when knocking each other.
Agate Jian Zhen method
Agate is a rare and precious thing, and there are many fakes on the market. Most of them are made of refined turpentine, mirabilite and broken glass. To identify the authenticity, it must be rubbed in the palm of your hand, and the color, shape and smell remain unchanged. However, some people think that everything that is prone to fever after friction is genuine, which is misunderstood and unreliable.
Method for naked eye identification of gemstones
Gems can be divided into natural gems and artificial gem. When we choose precious stones and jewelry, how can we identify them with the naked eye? Natural gemstones are generally soft and natural in color, and sometimes the colors are very mixed. Several kinds of * * * in a gem, the pattern is irregular, but very delicate. Observing the gem with naked eyes under strong light, or carefully observing it with a magnifying glass for more than 5 times, sometimes you can see cotton wool, reticular or tree-root inclusions and small cracks in the gem, and occasionally you can see obvious flat growth lines. Some gems feel cold and slippery, and look wet, as if they had been soaked in oil. A good gem has the effect of "cat's eye" and "starlight" after polishing, that is, there is a white line in the gem, just like the white line in the cat's eye under strong light during the day; "Starlight" is a gem that rotates in the sun, and the reflected light shines like the blink of an eye of the stars at night. Artificial gem is generally bright, uniform and pure. After polishing, the luster is dazzling and the color consciousness is strong. Because some rare earth elements are added, there are monochromatic ones, such as black, red and yellow. There are also composite colors, such as rose red and sauce purple. But there will never be a phenomenon that several colors of natural gems are in the gem. In addition, some gems have obvious circular bubbles and traces of synthetic growth products; Obviously, the growth line is linear; Larger particles; There are many specifications of the same color; Harder ones, generally above Mohs level 6, can't be carved with a knife. Instead, these stones can mark glass.
Identification of true and false gems
In the sun, with a light silver pot or white satin as the lining, put the gem at a height of about five inches from the lining to make it exposed to the sun. If the light passing through the gem shows the appearance of the silver wing of Venus in the lining, it can be concluded that it is genuine. If it is a fake gem, a shadow will appear on the lining. If you put the gem in your mouth for a while, you will drool, not only will you not feel dry, but your mouth will be very cold. If the gem itself gets hot, you can conclude that it is genuine.
Emerald Jian Zhen method
Fill a bowl with clear water, and put the gem into the bowl, which can make the whole bowl appear pale green and is a real emerald; Or put Jian Zhen's gems in a copper basin, enclose them with paper, and light the white paper with fire. If fire can turn green, it is true jade; Or prepare a pot of burning coal, and put Jian Zhen's gems into the burning coal. When the charcoal smells, the emeralds will go out immediately.
Yupu identification method
Whenever people see a piece of jade (a stone containing jade), they often suffer from the inability to identify whether it contains beautiful jade, which is really a pity. In fact, its identification method is also very simple. If precious jade is hidden in the stone, look at the stone in the light at night. If there is light in the stone, just like the light color of the rising sun, it means there must be precious jade in it. On the contrary, it is not.
Diamond identification method
Real diamonds glow green in the dark, just like sparks from wires. If it is a fake diamond, it can only emit a small amount of white light or even no light. Even if it glows, it looks dark and there is no flicker. In addition, the hardness of the diamond is the greatest. When the real diamond and the fake diamond are cut, the properties of the diamond will be obviously different immediately. China has discovered 12 1 species of jade, including 9 species of nephrite, jadeite and opal. There are 39 kinds of dushan jade and other jades, 0/7 kinds of Yin Zhangshi/kloc, 0/5 kinds of quartzite jades, 0/8 kinds of serpentine jades and 23 kinds of colored stones.
1. nephrite, jadeite and opal
Nephrite: Hetian jade is a kind of nephrite produced in Xinjiang, which is a precious jade species in China and enjoys a good reputation at home and abroad. Its carving is very popular in the domestic and foreign markets, and it is the main variety currently developed in Xinjiang. Nephrite is found in Sichuan, Liaoning and Jiangsu.
Emerald: Gem-grade jadeite is rare in China.
Opal: mainly refers to opal, because opal is the main component. As a raw material of jewelry, high-quality opal with color-changing effect has not been found in China at present. Yunnan, Shaanxi, Jiangsu and other provinces (regions) produce ordinary opal, which belongs to low-grade jade material. The common opal produced in Yunnan is not effective and fragile, and only some jewelry and small handicrafts can be processed.
2. dushan jade et al.
Dushan jade: Named after dushan jade in Nanyang, Henan Province, it is a timely jade. Fine texture and bright colors. Sometimes you can get 1000 kilograms of colorful jade, which creates conditions for making giant sculptures.
Plum blossom jade: produced in Henan, it is used to make jade bracelets, flowers and birds, utensils and other handicrafts.
Colorful Jade (Nine Dragons Wall): Produced in Fujian, it was famous as early as the Ming and Qing Dynasties. Jade has the characteristics of colorful, rich resources and good mining conditions.
Magnesite (peach blossom jade, crystal powder jade): mainly produced in Hunan, Sichuan, Qinghai, Beijing, Jiangsu and other places, it is a good raw material for jade carving. Lions, elephants, flowers, birds, fish and insects produced in Hunan are lifelike. Animals carved in Sichuan, especially door lions carved in Sichuan, have always been popular commodities snapped up by people at home and abroad. As the reserves are decreasing year by year, Beijing is currently in a state of sporadic mining. Qinghai has not been specially mined, but only when mining manganese ore, a small amount is mined by the way. Jiangsu has not yet been developed and utilized.
Turquoise: mainly produced in Hubei, Shaanxi, Anhui, Qinghai, Xinjiang and other places, with a small amount of output in Jiangsu, Hebei, Yunnan, Sichuan, Gansu, Henan and other places.
Malachite: mainly produced in Hubei, Guangdong, Yunnan and Xinjiang, and also produced in Henan, Jiangsu and Sichuan. The malachite belt in Hubei is clear and of high quality, but it is rare now.
Fluorite: mainly produced in about 16 provinces (regions) such as Inner Mongolia, Zhejiang and Liaoning. Inner Mongolia is rich in fluorite resources, ranking first in the country, including green, purple, yellow and colorless. Fluorite is mainly used for carving decorations, exhibits and other jade substitutes, and more are ornamental stones and mineral specimens.
3. Yin Zhangshi
Bloodstone: It is mainly produced in bahrain bloodstone in Bahrain, Inner Mongolia and Changhua Bloodstone in Changhua, Zhejiang.
Pyrophyllite: mainly produced in Qingtian, Zhejiang, Shoushan, Fujian and Liyang, Jiangsu.
Balin stone, Chang fossil, Qingtian stone, Shoushan stone and Longbaiyu (kaolinite) are the "five largest" in China. In addition, Guanglvyu (sericite), Liyang stone, Shangluo jade (muscovite), Pingtang flower stone, Huangling jade, Dongxing stone and purple jade belt stone are all ideal materials for carving seals.
Jade is an important part of rock and mineral resources. Like other useful minerals and rocks, it is formed by the geological action of various elements and their compounds that make up the earth's crust. It can not only form an independent deposit, but also coexist with other mineral resources in the form of symbiosis. Among the minerals and rocks in nature, there are many kinds of materials that can be used as jade, about 200 kinds, of which the main and particularly precious ones account for one tenth. There are many geological conditions for the formation of these minerals and rocks, but in terms of genesis, there are only three kinds, of which endogenesis accounts for the vast majority, followed by exogenesis, and a small amount is formed by metamorphism and mineralization.
First, the concept of gems
Gems in a broad sense refer to all kinds of raw materials suitable for pondering and carving into exquisite jewelry and decorative handicrafts. Including all kinds of natural gems, artificial gem, organic and inorganic gems, all kinds of jade, colored gems and so on. The narrow sense of gem is determined by the geological origin and value factors of gem or jade itself. It refers to the remains of minerals, rocks or paleontology formed by geological processes, which have excellent arts and crafts characteristics, are rare, durable and of high value, and can be processed into various exquisite jewelry and valuable handicrafts.
Gem refers to a mineral single crystal or a part of it which is formed by geological processes in nature and endowed with rarity. It is extremely rare, magnificent, colorful, hard and durable, and can be used for people to make exquisite jewelry and handicrafts. Most of them are crystalline simple substances (such as diamond-diamond) or compounds (such as corundum-red and sapphire). )
Jade refers to transparent or opaque minerals or rocks formed by geological processes in nature, with fine geology, clean color, toughness and wear resistance, and produced in dense blocks. After polishing, jade presents the characteristics of delicate, soft, clean, solid and greasy polished surface, which is different from the dazzling, flashing and gorgeous gemstones. Such as nephrite, sole jade, plum blossom jade, etc. Gemstone raw materials are processed and transformed into products with important artistic, historical, scientific and economic values. Except for a few products that are permanently collected by the state as national treasures, most products enter the market and become gem commodities, such as various gem jewelry and jade articles.
1.2 Evaluation principle of jade
Jade and its products are used to beautify and decorate people's spiritual and cultural life, so jade must have beautiful, durable and rare value characteristics.
(1) Texture This is the most important criterion for evaluating the quality of jade. Include crystallization, cleavage, cracks, impurities, etc. Jade is required to be delicate, dense, soft and moist. Fine texture means that mineral particles are less than 0.05mm, such as Duyu even less than 0.01mm. If minerals can be seen with naked eyes, the texture is rough and it can only be low-grade jade.
(2) Color is an important criterion to evaluate the quality of jade. It is required that the color or tone should be positive, the color should be pure, and it should be soft and bright after polishing, paying special attention to whether there is "clever color". The color should be novel and gorgeous, bright and not dim after polishing. For example, jade, in a narrow sense, refers to green, preferably green, or both red and green are purple. The market says that "Fu Lushou" is very expensive. If it is white without green, the value is much lower. Another example is nephrite, the highest grade is suet white jade, which is extremely valuable.
(3) The lumpiness is generally calculated in kilograms, and the quality of special precious varieties, such as "emerald green" in jadeite, is like a high-quality gem, which can also be calculated in grams or carats. Because jadeite is mainly used as a handicraft, the bigger the block, the better. Generally, good jade should be above 0.5kg, and low-grade jade should be above 2kg. Those that are extremely precious should be as long as they can be used as a ring.
(4) Transparency Generally speaking, the requirement of jadeite transparency is low, and many jadeites are translucent or opaque. Du Yu, for example, is translucent to slightly transparent or even opaque. But relatively speaking, the higher the transparency of jade, the higher the value. To see whether a piece of jade can be used, in addition to the above principles, we should also consider whether the luster is bright, whether there is porcelain, whether the hardness is greater than 4, whether there is a special structure, ribbon, pattern and so on. Fine texture is the most important evaluation principle. The ancient people in China distinguished jade as "the first virtue and the second image", with virtue referring to texture and image referring to color.
The jade mentioned above is all natural products. Due to the small quantity and high price of high-quality natural jade, people are urged to produce artificial products with modern technology and technology. For example, rock crystals are scarce and expensive, and the physical and chemical properties of synthetic products are the same as those of natural products, and the quality is better than that of natural products. However, due to mass production, the price is only 1% or lower than natural products. This makes it very important to know natural jade and artificial jade.
Second, the general characteristics of jade
The characteristics of jade are quite extensive, and the main characteristics of jade are introduced.
2. 1 color
Jade usually has beautiful colors. Color is one of the important factors that determine the preciousness of some jade. Jade minerals are generally bright in color, such as red, scarlet, blue, emerald green, golden yellow and so on. The depth of color is also important, but it depends on the specific situation. For some jade, "smart color" ("pretty color") is also very important. For example, the gray agate is not good-looking, but when it appears irregular and yellow, a pair of lifelike prawns are cleverly carved and their value doubles.
2.2 Transparency
Transparency is related to the quality of jade and the value of handicrafts. The higher the transparency of jadeite, the more valuable it is.
2.3 hardness
The hardness of jade is not only an important factor to measure its preciousness, but also an important basis for identifying and processing jade. Jade with different hardness has different processing means and technical requirements. Emerald should be above 4 degrees.
2.4 Brittleness and toughness
Brittleness refers to the internal bonding ability of jade and the performance of resisting external pressure, so it has nothing to do with hardness. Most minerals that can be used as gems are brittle, and so are diamonds. Toughness usually refers to the inherent bonding ability of jade. For example, jadeite and nephrite have great toughness and resistance to external pressure or crushing force because their constituent minerals are closely intertwined in microfibers. On the contrary, Dongling stone is composed of fine-grained quartz and mica, so it is brittle and has poor toughness.
2.5 defects
People often hope that "jade is flawless", in fact, this is almost impossible. Impurities (spots, lines, spots, etc.). ) What can be observed in jade is called flaw, including "dirty", "cotton" and "inclusion". "Dirty" refers to streaks, spots or patches produced when jade minerals are mixed with impurities in the formation process, among which black is the most harmful; "Mian" refers to the phenomenon that fine minerals and cracks in jade are arranged in linear or irregular fibers. The existence of defects not only affects the value of jade, but also is one of the important characteristics that distinguish natural jade from artificial jade. At the same time, some flaws also have a useful side, which can be carved into "beautiful colors."
Jade identification iii
Here are several common methods to identify true and false jade articles:
1, water identification method
Drop a drop of water on the jade. If it becomes dew, it will be real jade if it persists for a long time.
2. Touch by hand
If it is real jade, it feels cold and lubricated by hand.
3. Observation method
Looking at jade under the light, it is a real jade with clear color and even green distribution.
4, prompt recognition method
The real jade on the tip of the tongue is astringent, but the fake jade is not.
In addition, you can also observe with a magnifying glass, mainly to see if there are cracks, and the value of cracks is greatly reduced.
Looking at the sunshine, there are some foggy things in jade, like cotton wool.
Jade is very hard, like a diamond, so it can draw a series of marks on the glass.
Jade is cold, put a hair on it, burn it with a lighter, and keep burning at the jade's head.
The method of identifying fake jade with stone powder is to put the jade under a high-power light bulb for 1-2 minutes, and then test the temperature of the jade by hand. Real jade has good heat dissipation and feels very cold, while stone powder has poor heat dissipation and feels very hot. Real jade can reflect the lines in the stone under the irradiation of spotlight, but artificial jade can't produce this effect.
There are six criteria to identify the quality of jade, namely "color, transparency, uniformity, shape, percussion and luster".
(1) color
Green is the best jade, and the value of red and purple jade is only 1/5 of green jade. If jade contains red, purple, green and white, it is called "Fulu Xi Shou"; If it only contains red, green and white, it is "Fu Lushou". The dull and yellow ones are inferior. If it is monochrome jade, the color is better.
(2) Pass
Transparent and crystal clear as glass, no dirty spots, no chaff and no astringency is the top grade. Translucent and opaque jade are called intermediate jade and ordinary jade respectively. Before and during the Qing Dynasty, jade with red, green and white colors was called jadeite. In modern times, jadeite refers to generally transparent jade. At present, jadeite is transparent and green.
(3) uniforms
The color of jade is uniform. Although it contains white and green, the color is uneven, so the value is very low.
(4) Shape
The shape of jade can be processed into different styles according to different aesthetic requirements, and there is no special standard. Generally speaking, the bigger the jade, the better.
(5) Knock on the door
Jadeite often has cracks and cuts, which are generally not easy to observe. If you knock with a metal bar or gently throw jade on the counter, you can tell whether there is a crack from the clear voice. The louder, the better.
(6) according to
Emerald has black spots and flaws that are not easy to find with the naked eye. As long as you take pictures with a magnifying glass of 10 times, you can have a panoramic view.
The quality of jade can be divided into 10 grades, and each grade can be subdivided into three grades: upper, middle and lower. Among them, white jade has the lowest value regardless of color and transparency.
Natural jadeite is characterized by slight light color, without light blue (commonly known as evil color). There is also a synthetic jade, which is made of jade powder, crystal and salt water, and looks like a dark "old pit jade". The identification method is very simple, because it is different from natural jade in proportion. It can be said by hand or with a balance, and the heaviest one is the real 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. 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.
In the long-term practice of jade processing and production, the predecessors of China's jewelry industry have summarized a lot of experience about jade, and expressed these characteristics of jade in the form of concise aphorisms. Remembering these maxims and being able to understand and appreciate their profound connotations will benefit you for life.
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 are made of jade.
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