Have your jade sent the test? Dyeing jade you dare to wear? The dyed jade not only makes the black-hearted businessman profitable, but also contains heavy metals that are harmful to human health.
In the jade world, people think that the value of jade is largely determined by green, so many people dig into the jade to add a bit of "fitness". In addition to dyeing green, in recent years there are also dyed red, purple-colored jade, this sister will teach you a few tricks to debunk these fake jade.
Eye and ear observation, suitable for experienced people
Really fine dyed jade, the layman can't be identified with the naked eye, let alone rely on the ear to listen to the sound. However, for experienced experts, it is only by eye and ear that can distinguish whether jade is dyed. How do they do it?
â—Visual observation
Through the degree of moisture and transparency, the natural jade has a higher degree of moisturization and transparency than dyed jade, and the dyed jade is relatively dry. In addition, color exaggeration, contrast, large, unnatural, and generally dyed jade.
â—Sound discrimination
Dyed jadeite destroys the internal structure of jadeite because it is treated with high temperature, so if the sound of tapping is dull, it may be dyed jade.
â— observe color root
The dyed jade has a silky root, and the edges of the color are layered and blurred. The transition is unnatural, and the color floats from the outside. But not all jadeites have outstanding roots. For example, hibiscus species, high-grade green jade or dragon stone species of jadeite can not see the radix.
The spread of the radix is ​​related to the water of the jade, and the color of the jade that grows well is obvious. In addition, the substances secreted by the human body enter the jade, fully filled into the gap between the jade crystals, making the jade structure more dense, increasing the transparency of the jade, and also spreading the color roots.
â—Magnifying glass inspection
This method is suitable for identifying purple jade. Observe the relationship between color and jade grain, and judge according to the characteristics of color root and color shape. For example, is white surrounded by purple or purple surrounded by white? The white is surrounded by purple and the natural purple jade; the purple surrounded by white is dyed jade.
Gadget identification, entry novice optimization
For the novice who has no feeling of jade, the four methods described above are not suitable. But it doesn't matter, although we still have a certain distance from the experts, but with some small tools, to enlarge the difference between dyed jade and natural jade, it is still easy to identify true and false jade .
â— boiling water soaking
The jadeite which is colored by the inorganic raw material and the green polished powder is soaked in boiling water of 80~100 °C for several hours, the water will turn green. However, this method can't be distinguished by the jade of high-tech dyeing, so it needs to be judged by other means.
â— Observing under incandescent light
Under the incandescent lamp, the color is red, indicating that it is artificially dyed; if the color does not change red, there are two possibilities: natural color or dyeing, which needs further identification by other means.
â—UV fluorescent lamp
With the observation of ultraviolet fluorescent lamps, the natural purple jade has no fluorescence reaction under ultraviolet light, and the purple-colored jade has obvious fluorescence under ultraviolet light.
Scientific testing, new and old hands are applicable
After the high-tech dyed jade, even the veteran is difficult to ensure that only through the eyes, the ear will discern whether the jade is dyed. Therefore, when the general method can not judge the true and false jade, the three scientific test methods described below can help you.
â—Chalc filter identification
The jadeite that is irradiated and changed in color has a green color only on the surface, and is distributed in a ring-like or plaque-like manner. Such a C-car jade is purple-red under the Chelsea mirror. The emeralds that have been modified by irradiation have good transparency, but the blue is blue and the surface of the jade pieces is bombarded. The surface of the former is darker than that of the unexploded area.
â— Heat treatment discrimination
The difference is natural color or twilight jade, which can be distinguished by heat treatment to make the jade appear red. The natural red jade has better transparency, the red part has strong luster and has aura; the red jade appears red, dull, thick and even.
â—Chemical reagents
In some dyed jade surface, dilute hydrochloric acid, or use cotton ball 蘸 "to the word spirit" to scrub C cargo jade, its green or purple has faded and faded.
Cowboy Shirts,Checked Cowboy Shirts,Cotton Twill Yarn-Dyed Shirts,Cotton Brushed Western Shirts
SHAOXING UNIVERSE IMPORT AND EXPORT CO.,LTD , https://www.zjshirts.com