#Ancient Jade Dating Techniques #The longer the jade enters the soil, the more this jade is unearthed, but there are also differences.
Chinese jade is called nephrite jade, belongs to the hornblende class, but there are tremolites, orthopites, blue amphibolites, impotence, etc. in the large family of horned amphibolites, which also have soft and hard differences, and the jade in these hornblende families are differently soiled in the wet and low-lying south of China and unearthed in the high and dry north. They are also buried in tombs of different qualities, some tombs have not collapsed for hundreds of years or thousands of years, and some tombs have been destroyed for several years or decades, so the degree of erosion of jade in the soil is different, and some of the unearthed jade looks very raw, very old but in fact not too old. According to the above, I can only talk about the general law of excavating ancient jade raw pits and ripe pits. Here, I take the jade dragon and dragon shape excavated from the Hongshan cultural site in the north and the jade chun excavated from the Liangzhu cultural site in the south as the basis for the generation by generation.
The Hongshan culture period, around 4000 BC, has been about 6000 years ago. The jade dragon of the Hongshan culture period unearthed in 1971 is full of black lacquer, and the black lacquer is like black stone, the whole body is rotten soil is uncertain, there is no texture, through the strong light whether this jade dragon sees the texture I don't know, this jade dragon was unearthed in Inner Mongolia with a dry texture, and it has been soiled for more than 5,000 years. The dragon-shaped whole body of the Hongshan culture period has been disguised by lime Qin, and the whole body is full of decaying soil, with brown soil spots in the local area, and the texture is not seen, and the texture cannot be seen through strong light.
Liangzhu culture period is about 3300 BC - 2250 BC, more than 4000 years ago, from the Liangzhu culture period of Yu chun to see that because the jade in the soil is different, so Liangzhu Yu Chun has different pit conditions. In the early days, yu Qun was subjected to soil Qin such as yellow jade and slightly red soil spots, and in the middle period, Yu Chun was disguised by lime Qin, with less decay and no texture, and it is not known whether the jade can be seen through strong light on the edge of the jade. Three generations of ancient jade 200 BC - 221 BC, two or three thousand years ago, three generations of ancient jade rough as stone, fine examination like jade, the whole body soil eats the proportion of soil spots, some are covered in lime, full of black luan ancient.
Qin and Han ancient jade 221 BC - 200 years ago, so far about two thousand years, Qin and Han ancient jade looks like jade from a distance, close to see jade, jade body has a small proportion of soil to eat, the whole body has a large proportion of soil spots, and some are full of spots. Whole body or local black lacquer ancient.
The ancient jade of the two Jin dynasties and six dynasties dates back about 1,800 years, and the excavated ancient jade has a jade phase, there are soil spots, and a small amount of jade skin has been unearthed, most of the ancient jade with jade skin has cracks in the jade skin, and there is a thin black lacquer on the whole body or part.
Sui and Tang dynasty ancient jade is more than a thousand years old, unearthed ancient jade at a glance to know that it is jade, no full of spots, local rust and earth demons, local thin black lacquer ancient.
The ancient jade of the Song Dynasty is only a thousand years old, and there are only a few soil spots and black lacquer on the jade body.
Ancient jade in the Ming Dynasty dates back more than 500 years, and the jade has not changed much after it has been unearthed after it has been excavated.
The above is to see the general law of the raw pit and the mature pit, of course, but also to analyze the specific situation, but also to see whether this jade is unearthed in the low and humid south or unearthed in the high and dry north. The same piece of raw and cooked jade, such as the surface of the jade is loess may be Han Dynasty, such as red clay that may be Sui and Tang.