In the long history of jade culture of Chinese civilization for about 9,000 years, the craft technique of scraping has been continuing, and even in the Qing Dynasty, many of the words of seals in the Qing Dynasty were scraped out.
From the well-known Hongshan culture, Liangzhu culture, post-Shijiahe culture, Longshan culture, to the Xia, Shang and Zhou dynasties, scraping is the main craft technique of engraving the Yin line, until the early Spring and Autumn Period began to appear very small Ding Tong began, and slowly scraping became the secondary craft technique of the Yin line expansion, deepening, and repair, but it still appears from time to time, for example: now it is very concerned by everyone, the jade gang mao of the Eastern Han Dynasty, and most of the words in it are scraped out. Including the point stone of the Warring States period (that is, the stone was very small at that time, and when a yin line was made, it was a small stone connected to a small stone, and it was done in this way, so the stone and the stone would also be connected and repaired by scraping). And so on and so forth. So will the scratches of each era be the same?The answer is that of course there will be differences, so what kind of differences will there be?
First, we confirm which era the vessel type and ornamentation are, when you determine the era, for example, it is the Shang Dynasty or the middle and late Western Zhou Dynasty, then if you understand that the Shang Dynasty and the middle and late Western Zhou Dynasty are also scraping this kind of craftsmanship, but the characteristics, characteristics, and characteristics presented are different, you will be very good to help you judge the authenticity.
Similarly, the rubbing of Hongshan culture and the rubbing of Liangzhu culture are also different. You see, a simple scraping process will divide so many branches. Therefore, the traces of microscopic process are very complex, and we need to be in awe and learn Xi seriously.
For example, we know that a lot of jade artifacts have been unearthed in the Hongshan culture, so there are many scratches left on these jade artifacts. So let's give you one or two examples to show you what the scratch marks look like when you go down to the Hongshan culture.
A jade pig dragon of the right banner of Bahrain:
Let's take a look at the observation point in this yellow box, and what the microscopic process features look like when magnified 120 times.
The ditch edge is rough (this is in line with the scratch marks we summarized before, the shallow yin line often appears rough and blurry) The ditch wall and the bottom of the ditch are rough, full of irregular crystal cluster convex ridges arranged in the same direction and strip convex ridges and grooves arranged in the same direction, local depressions, irregular U-shaped cross-sections, and the width-to-depth ratio is 2:1. This is the microscopic process trace of the stone flakes after scraping the jade material into a line, and there is no trace of any grinding process.