Talk about the five kinds of jade in the identification of ancient jade

In the identification of the jade manufacturing age, the five colors of jade articles should be noted by the jade. This is the jade color of the jade's old color, natural color, ink color, dyeing and jade weathering.

Among the old colors of jade, the most important jade people pay attention to the influence of other elements contained in the soil when jade is buried in the soil, which will produce color changes. In the ancient literature, it is called ochre, among which rust is more common. Color, copper green, dark yellow, black, white. It is often referred to as rust, copper, earthworms, mercury, and leeches. Among these color changes, besides white, which makes the hardness of jade change greatly and is not very popular, other jade articles with color change tend to have a higher market price than jade without color change.

Pan jade is rubbing hands or skin with jade. Some jade jade will produce color changes due to human friction. These color changes are called “disc color”. In general, the old jade plate will produce a sense of maturity. If there is a twilight on the old jade, the color will change if the hand is used for a long time. If there is no twilight jade, there will be a fine luster after the jade plate. Some collectors will look at the jade and the old and new when they choose jade. Especially in the Neolithic Age, it is generally not a temporary device that was rushed at the time of burial. It has been used for many years, even for generations. Therefore, it is often used in the process of using the disk, the surface is delicate, and the works are very good. The fine light, although the fine light is buried and tarnished, can still exist, and in the skin of the jade surface is the lower layer, under the floating color. This phenomenon is particularly evident in the Hongshan culture jade.

The color of jade is the color of jade material. The ancients called the standard of jade color as "fu", and put forward the saying that "red is like chicken" and "yellow as green", that is to say, in the jade of various colors, the above standard is the most precious. Of course, in the selection and evaluation of jade materials, in addition to the depth of the color, it depends on the state of its distribution, whether there is a split, the color is even, and the color change is also excellent.

Jade color is the color change of jade material in natural weathering. Dark yellow, tan brown and white are the most common and progressive changes in weathering. These changes are mostly from jade, especially found in rivers. The surface of the pebbled sub-material appears, so it is called jade skin. The color of the jade skin is not easy to distinguish from the color of the ochre. Therefore, it has a jade color as a jade color. Generally speaking, the weathering color should be more uniform. Pure, ochre is not carried out in a single case, but multiple factors are carried out at the same time, so the uniformity is poor and the type of color is not single.

Dyeing is a technique in the manufacture of jade, especially when it is used to imitate ancient jade. Natural jade is rare and expensive, and the secondary materials are numerous and ambiguous. The imitations often make false ancient jade by secondary materials. There are many different methods of dyeing. Generally, it can be divided into good jade dyeing and secondary jade dyeing. The secondary jade dyeing can be distinguished, worthless, good jade dyeing or masking, or increase the value of the work. Common stains are burnt black, fried silk amber, artificial white, rust yellow. The so-called black burning, that is, using fire or partial, or the whole, jade is blackened by fire, and now it is gray, cracking, black is often difficult to distinguish from black ochre. The fried silk is heated by the fire and then cooled into the water to cause cracks on the surface of the jade. In the color of the added beam, the color is various and is mesh-like. Amber is an ancient method. With this method, the surface of the jade has a layer of amber, which is very nice. Artificial white is made of chemical raw materials to make the surface of the jade appear white, soft texture, and sometimes reveal jade color. Rust yellow is used to soak the jade with rust water, so that the surface has rust color. The modern jade method is peculiar, diverse, and mostly secret. When identifying, one must find a way to see more jade works. First, remember to unearth. The color characteristics of jade.

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