Ancient jade knowledge puzzle

It is difficult for people entering the jade collection market to have a detailed understanding of the situation of jade, and the development of the current jade market seems to have more and more demand for this, for example, the red color often found in ancient jade. The powder is cinnabar and it is slightly acidic. Before the Tang Dynasty, many cinnabars were often used for antisepsis in the tombs before the Tang Dynasty. Since jade objects were generally placed on the tombs, many jade articles had red cinnabar marks on their surfaces. It is worth mentioning that cinnabar does not generally enter the enamel, that is, it will not erode into the interior of the jade, so the cinnabar on the surface of the jade can be easily brushed off.

The grain pattern is one of the most popular patterns in the Warring States Period. Because of the difficulty of grain pattern making, the jade ornaments are often exquisite and have a high ornamental value. Among the ornaments derived from the grain, there is a pattern called "grain pattern", which is an arc on the edge of the grain, resembling a sly tail. Valley grain is a common decoration on the jade jade bowl in the Han Dynasty. Generally, this pattern is bas-relief jade sculpture. The hand touch has obvious protrusions and sleek sensations. It is arranged neatly and evenly. Even near the edges of the jade squill, the valley lines are indicated by a half circle of the Yin line to show the neat lines; each valley is shown; The tail of the grain is completely clean, with no obtrusiveness.

According to the experimental results, the "glass light" on the surface of the jade of the Warring States Period and Han Dynasty was formed by adding hematite powder during high-speed polishing. "Glass-light" surface is very dense, and it is not easy to be eroded. For example, many Han dynasty tombs in Xuzhou are excavated with "glass-light" jade. Light can be identified. Liangzhu culture jade ornaments are famous for their exquisite and detailed neatness. Their jade lines are as thin as hair, and individual individuals are only slightly larger than soybeans. Engraved bird's eyes, some as small ballpoint pen balls, uncanny workmanship, it is exquisite. These patterns are difficult to move even with metal tools such as copper and iron because the hardness of bronze and iron is less than that of jade.