The most accurate method for the identification of Emerald's A and B goods is to go to an authoritative appraisal agency and use the instrument for identification. However, in the actual purchase process, it is impossible to send every jade to the inspection. Therefore, it is very practical to master some simple identification methods of Emerald A and B goods.
First, the gloss: When using the naked eye to identify jade A, B goods, first look at the luster of natural light. Generally, the gloss of A goods is strong glass luster, while the light of B goods is mostly waxy, the luminosity and smoothness are poor, and most of B goods C have no fluorescence. Look closely, the jade edge of B cargo C goods often presents a weak blue-violet light. This is the color of the reflected light of the filled organic gum.
Second, the surface: look at the surface generally need to use a magnifying glass, 10 times. The surface of the jadeite A is generally smooth, especially the old jadeite; the surface of the B cargo often has continuous corrosion pits. The corrosion structure of the surface of B goods is disordered, because the various minerals in the jadeite composition are not dissolved in the acid, and often form arachnoid acid etching on the surface; while the surface of the A cargo is relatively scratched and polished. It is orderly because the frictional forces are generally in one direction.
Third, the structure: Under the light, the structure of the A goods is clear, and the structure of the B goods is fuzzy, and the cotton inside also gives people a feeling of divergence. For the colored jade, the feeling of B goods C is that the color is unnatural, the edges of the color tend to diverge, the color is floating, and the color root is not seen or the color root is not obvious. The color of A goods is different, and there is a saying that "color is strong".
5 4, weight: A goods jade is a natural jade, the density is very high, about 7, in the hand will feel more pressure; B, C goods have been artificially corroded, filled with glue, the internal structure has been destroyed, natural The density will decrease.
V. Sound: Hang the jewelry with a thin line of hair, etc., and gently collide with agate or A jade, it will make a very melodious, clear-talking sound, the sound is more crisp and sweet, there is a sense of metal; the sound of B goods Bored, not crisp, no pleasant sound.
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