, a media reported such an example: There was a lady who bought a jade bracelet in a jade shop. Before buying, she also specially asked a national gemstone inspection authority to make a grade identification. The conclusion was A. goods. Three years later, took the bracelet to a jewelry store for consignment. Unexpectedly, the jewelry store entrusted the same testing center to re-apply, and the conclusion was B goods. , therefore, brought the testing center to court.
Why can A goods change B goods? This article caught the attention of the director of the Jade Collection Committee of the China Collectors Association because such things happened to his friends who loved jade and collect jade. When exchanged this phenomenon with, the collector of Tangshan,, “Your words have opened up my heart.” This is the case. bought a piece of jade as a gift for his daughter and was identified as a cargo. After a while, his daughter took the jade again for identification, and the conclusion turned out to be B goods. The daughter was in a bad mood and felt that her father bought a piece of B goods to fool her. felt both strange and wronged, and caused misunderstanding between the father and the daughter.
“This kind of thing is more common around me. The modern jade is like this. In the Qing Dynasty, the antique jade does not need to be said. After testing, it is almost all B goods. experience is not a case.”
Investigating the truth believes that the most direct cause of the A goods change B goods is “accepted.” Some jadeites in the sweat, cosmetics or soil in the long-term contact and infiltration of the acid will produce the “erosion” of the surface structure, thus showing the surface structure characteristics similar to B goods, although the composition of jade has not changed, but as experience Insufficient and under-trained people can easily misjudge them as B goods when the test is not sufficient.
Not long ago, in an interview with two reporters of the Guangzhou Institute of Geochemistry of the Chinese Academy of Sciences in the “Guangzhou Daily” reporter, we seem to be able to see the deeper hidden concerns of jade identification.
According to experts, natural jade is carved, processed, and finally passed through a waxing process. The stewed wax, including waxing and dipping wax, is an optimized method of jadeite approved by the industry. Waxing is to soak the finished jadeite in the melted paraffin, keep it for a period of time, so that the paraffin is immersed in various voids on the surface of the jade, so that the small pits and small pores on the surface of the jade can be filled in, so that the surface gloss and transparency of the jadeite are enhanced; the impregnated wax is obtained by immersing the jadeite which is originally loosely or surfaces treated with a weak acid in the molten paraffin for a period of time, so that the paraffin is immersed in various voids on the surface of the jade. The jade that is immersed in more paraffin will change the aging of the wax and produce white flowers, which will cause the transparency of the jade to deteriorate. At this time, the wax can be restored by re-waxing.