The identification of jadeite has three contents: one is to identify the quality of jadeite, that is, what is the jade material variety of jadeite; The second is to identify the artificial treatment, that is, whether the color of jade and the Qin color or other characteristics of ancient jade are caused by artificial treatment; The third is to identify counterfeit products or even synthetic products, that is, to identify genuine counterfeiters.

1. nephrite identification

Nephrite is generally treated artificially, which is relatively rare. Because it is white, there is no need to try dyeing. Nephrite is a precious jade since ancient times. So there are fakes. The most common counterfeit products are serpentine jade, quartzite jade and calcite jade. The sensory characteristics of nephrite are: first, luster, which is greasy luster or greasy glass; Second, structure, nephrite is a kind of jade composed of interwoven fibrous small crystals. It can be seen that variegated jade is composed of interwoven fibrous small crystals, but there are no transparent granular small crystals, which are called "speckled crystals"; The third is transparency. Compared with jade that may be confused, its transparency is relatively poor. Although it is translucent to opaque, in fact, most jade is slightly transparent, and translucent nephrite is not easy to see.

2. Jade identification

There are star-shaped, linear and flaky flashes on the surface of jadeite. The color of jadeite is rich and colorful, which is not found in other gems, so we should not only look at the color and tone, but also pay attention to the combination and distribution of colors. The luster of jade is glass luster, greasy luster or greasy glass luster. Jade with good transparent water head is thoroughly hydrated, which is not available in other jadeites. Put the smooth surface of jade on your face or lips to feel cool.

What are jadeite A, B and C goods?

The A product of jadeite is pure natural jadeite. Only by traditional mild surface acid or surface wax treatment, the structure of jadeite is corroded and destroyed.

Jade B, the national standard of jewelry and jade, is optimized to be jade that has been bleached and waxed by acid leaching during processing. According to the strength of acid leaching bleaching, it can also be divided into strong corrosion and weak corrosion. The jadeite with strong corrosion optimization is equivalent to the glue-free B goods on the market. Its interior has been seriously damaged. During the processing, the rubberized jadeite was corroded and bleached by strong acid, and the internal structure of jadeite was seriously damaged, and then the rubberized goods were filled with anti-reflection solidified colloidal polymer. Whether optimizing jadeite or filling jadeite should be classified as destructive treatment of jadeite, that is, B goods. Weakly corroded jadeite is called optimized jadeite because it does little damage to it. In addition, jadeite is filled with water glass (silicon dioxide), and jadeite is filled with nano-aluminum and silicon dioxide, both of which are called advanced B goods.

Jade ornaments filled with glue, bleached with glue or without glue and added with dye are called B+C goods.

The c product of jadeite is dyed jadeite. Whether it is acid leaching bleaching or filling with glue, artificially colored jadeite is called C goods.