Emerald has high hardness, strong wear resistance and toughness; In addition, jade has good heat resistance and will not be injured by fire under normal circumstances. Moreover, jade has good pressure resistance and will not break after extrusion.
Emerald is chemically stable in the air, and can even be preserved permanently as long as it is not exposed to strong acid and alkali. Moreover, there has always been a saying in the jade world that jade raises people. If you wear jade often, with the extension of use time, the color and transparency of jade will become bright, psychic and moist.
Extended data:
The data unearthed in China prove that there were jade articles in the early Neolithic period. A small number of jade beads, jade tubes and jade jun were found in the Neolithic cultural site in Hemudu, Zhejiang Province. But the origin of jade in China should be earlier than this. Jade was born out of the matrix of stone tools, far beyond the stone tools. At first, it was just a small jade block drilling a hole to hang ornaments, or grinding it into jade weapons or tools like grinding stone tools. In the late Neolithic period, jade articles were only carved or polished products, which were large and complicated in shape and could be regarded as handicrafts.
In the Neolithic age, grinding stone tools was the main symbol, so was the technology of processing jade stone tools. Stone-making technology has developed from beating to grinding for thousands of years, and jade-making technology has also gone through the same process. The two may be exactly the same in technology and tools, but jade has other requirements besides practicality, so the technical requirements are more complicated than making stone tools. Jade not only requires higher smoothness than stone tools, but also can carve various patterns, which is out of people's aesthetic needs and is a non-practical artistic decoration. This is rare on stone tools.
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