Amber is a resin fossil, but it is actually an organic mineral composed of carbon, hydrogen and oxygen. About 40 million years ago, trees with high oil content in the forest, such as sequoia, Metasequoia, pine and cypress, secreted transparent and viscous gum (also known as resin); Due to the movement of the earth's crust, over time, trees turned into coal, while gum turned into beautiful amber. In the long years since then, amber has undergone various changes due to the influence of surrounding soil and water organic matter, sunlight, topography and other factors, and its color, specific gravity, hardness, melting point and so on have certain differences. As big as a goose egg and as small as a grain of rice, the longer it is, the thicker it will be. The epidermis has fine cracks similar to silkworm wings, which are brittle and soft, easy to collapse, and the leaves are broken like shells. Amber, as a fossil of resin, is actually a big category. According to the depth of the stratum and the formed environment, it can be Jin Po, amber (including insect amber and aromatic amber) beeswax, pine wax, rosin and asphalt in turn. Amber friction produces electrostatic charge, which can absorb paper, iron filings and other tiny items; Some of them can also be charged without friction, which feels like licking their hands. The ancients called it mustard. In the old days, amber handicrafts were mostly in the Ming and Qing Dynasties, but amber was small, and its carved pendants were more prominent in Suzhou, Beijing and other places. Jin Po's golden color is pure, and it is a transparent resin-like small particle, and it is very rare that there is no big one (only the size of a silkworm head). It was used by senior officials of the Qing Dynasty to make Zhu Chao, and its price was very high. Amber is rich in varieties, including brownish red, bright red and dark red. The bright red one is called Shepper, which is a translucent resin with few impurities. Before amber was formed, it was very rare that beetles crawled over just when the secretion of fatty trees was secreted, that is, they got stuck in it. There is also a kind of amber called Xiangpo, because it can emit fragrance after absorbing high temperature, and it is something that ancient aristocratic women rubbed in their hands. The skin of fake amber feels smooth, sometimes there are traces of lathe turning, and the shape of bubbles is flat and long. There is also a kind of synthetic amber on the market, which is made by heating and melting amber chips, then adding flax red oil for coloring and pressing. If you look closely under the light, you can see the phenomenon of solution flowing. Mastering the above methods, it is not difficult to distinguish between true and false amber.