Identification method:
1. Usually this kind of collection is low imitation in modern and contemporary times. The Qin color on the surface is always old. Through acid-base corrosion or high-temperature calcination, Qin color can be scraped off with a needle tip or a knife. If the color of the piano can be scraped off, it must be an imitation. You know, the dark color of jade is naturally formed for more than 100 years, and the basic dark color will go deep into the jade. It is impossible to completely remove the dark color by scraping with a knife.
2. This kind of jade is basically not natural jade, but is made of jade powder or resin under high pressure, and the hardness is usually not enough. You can use a sharp tool such as a needle tip to slide down the marks on the jade. However, all jade that can be traced back (the jade here is traditional jade) is basically not good jade. It is impossible for hetian jade to draw traces with a knife or a needle tip.
3, you can use towels and other items to rub the surface, smell it at close range, and basically smell the pungent sour taste, typical acid-base corrosion treatment. Low-level fake.
Most of these things are fakes. The real jade in Qianlong period has a term called "Qianlong's work", which describes the exquisite craftsmanship and superb skills of jade in Qianlong period. Usually, this so-called "Qianlong Year" jade bowl is rough, artistic and has no collection significance and value.