As we all know, Jade has the points of A goods, B goods and C goods. B goods jade, bleached and glued jade, is a jadeite that has been cleaned and glued with strong acid (soaking and cleaning with strong acid helps to improve the transparency and color of jade). And how do you identify the B-car jade? Xiaobian tells you! Generally, you can pay attention to the observation from the following aspects:
1, color aspects
After the bleached jade, its color is generally brighter, less natural, and sometimes makes people feel yellowish.
2, the gloss aspect
B goods jade has a resin luster, while untreated natural jade, the same as glass.
3, structural aspects
The structure appears loose, and the crystals are staggered and displaced, which proves that the crystal structure is damaged.
4. Proportion
B goods jade will be lighter than the original untreated jade, but this is not absolute, because the proportion of each jade itself is also up, but can be used as a reference.
5, the reaction under the violet light
Generally, B goods are fluorescent under the violet light, but there are many reasons for causing fluorescence or suppressing fluorescence. Therefore, when using fluorescent lamps to observe the fluorescence of gemstones or jadeites, it is necessary to have certain knowledge for analysis and not to use them mechanically. Generally, the treated jade is filled with epoxy resin, and the epoxy resin tends to be fluorescent, so it can be used as a reference material; some B products are also not fluorescent, so it is necessary to analyze it according to its original color. Can make a conclusion.
6, observe with a microscope
This is the most reliable method of identification. Under the microscope with a magnification of 30-40 times, it is observed whether the crystal structure of the jadeite is destroyed. This is why the jade pattern is generally destroyed. If it is destroyed, it can be proved that this is Artificially treated jade, sometimes can also see the resin present inside, of course, the person who observes the identification must have a complete understanding of the original structure of the jade, in order to make a correct identification.
7. Identification by special infrared absorption spectrometer
This special infrared absorption spectrometer can detect whether the jadeite contains epoxy resin, so as to identify whether the jadeite detected is B. This is because the infrared absorption spectrum of the jadeite containing epoxy resin and the natural jadeite is significantly different.
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