Natural crystal glasses that are generally sold on the market will have more or less cotton wadding to prove that they are natural crystal glasses.
The price of real natural crystal glasses is also very high (high price refers to the high grade of the lens, of course, there are also natural crystal lenses of 100 yuan, but the quality of such lenses is too bad, most of the lenses have cotton. Ice cracking effect Depending on the object). 1,200 yuan is also known as AA grade, AAA grade does not have to be questioned, it must be artificial crystal.
Nowadays, the development of science and technology is too fast, and the technology is updated. Many ancient methods have not been used to identify natural crystal glasses. Especially in the case of high-end crystal glasses, the 40-fold magnifying glass can not see the inclusions, so the general The instrument is also undetectable. The most authoritative, and the fastest, the simplest is to issue the country's formal CMA authoritative certificate (of course, must bring the formal invoice of the certificate).
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