Jade has the reputation of “the crown of jadeâ€, its crystal-clear luster and brilliant color, which combines feminine beauty and masculine beauty, which can reflect the charm of women and show the male masculine, so it has always been loved by people. . Among the many gemstones, none of them can be as precious as the finest jadeite with good water color. However, the natural jadeite and quality products can be described as “rareâ€, which is why people have artificially treated the jadeite with poor quality. It is more beautiful, and according to the different means, the jade A, B, C goods are called.
A goods: refers to the natural jade goods without any artificial chemical treatment. The composition, structure, color and transparency are all in a natural state. The shape of the jade is changed only by mechanical processing. The certificate will be marked with “Jadeâ€.
B goods: refers to the original low-grade jade, treated with strong acid treatment, remove impurities, preserved green, purple, and then consolidated with epoxy resin, color, jade is natural (true), but the structure has been destroyed The jadeite will deteriorate in color and quality after a long period of time. The certificate will be marked with “Jade (handling)â€, and the method will be indicated in the remarks.
C goods: refers to the jade and its finished products after artificially adding foreign dyes or medicines. The jade is true and the colors are artificially added. The certificate will be marked with “Jade (handling)†and the method will be indicated in the remarks.
For Jadeite A, B, C goods, it can be easily distinguished by the method described below:
B goods jade:
(1) The gloss is weaker than the natural jade, and the surface is observed under the light source, which feels like the surface of a candle or pork.
(2) The surface generally has irregular crack development, which can be observed from the oblique direction by means of a magnifying glass.
(3) The contrast between color and texture is obvious, and the color will be disordered.
(4) The structure usually changes greatly, and the internal particles are observed by means of a magnifying glass, and there is a loose sense of separation.
(5) The sound is boring and turbid when knocking (this method is mostly used for bracelets). The bracelet can be suspended by a line and tapped with jade or metal objects.
C goods jade:
Colors tend to be concentrated in the cracks, and in the dark field of transmitted light, it is easy to observe that the color is filamentous.
Due to the continuous development of science and technology, the means of counterfeiting are constantly improving, and it is difficult to distinguish by simple observation. Therefore, the author advises everyone to go to the regular manufacturers to make purchases, and ask for the identification certificate of the authority.
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Pre-Dispersed Rubber Chemicals With NBR As Binder
Pre-Dispersed Rubber Chemicals With NBR As Binder, Basic Accelerator For Sulfur-cured NBR Rubber
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